MXPA01007417A - Water-flux limiting cleansing articles - Google Patents
Water-flux limiting cleansing articlesInfo
- Publication number
- MXPA01007417A MXPA01007417A MXPA/A/2001/007417A MXPA01007417A MXPA01007417A MX PA01007417 A MXPA01007417 A MX PA01007417A MX PA01007417 A MXPA01007417 A MX PA01007417A MX PA01007417 A MXPA01007417 A MX PA01007417A
- Authority
- MX
- Mexico
- Prior art keywords
- layer
- article
- cleaning
- water
- skin
- Prior art date
Links
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Abstract
The present invention relates to a disposable cleansing article comprising:a) a water insoluble substrate comprising:1) an apertured first layer wherein said first layer has a water flux rate of from about 0.4 cm3/cm2-s to about 20 cm3/cm2-s;2) a second layer attached to said first layer;and b) a cleansing component comprising a surfactant, said component being disposed adjacent to the substrate. The present invention also relates to a method of cleansing the skin and hair which comprise the steps of:a) wetting with water a disposable cleansing article comprising a water insoluble substrate comprising:1) an apertured first layer having a water flux rate of from about 0.4 cm3/cm2-s to about 20 cm3/cm2-s;and 2) a second layer attached to said first layer;and a cleansing component comprising one or more surfactants, said component being disposed adjacent to the substrate;and b) contacting the skin or hair with the wetted article.
Description
CLEANING ITEMS THAT LIMIT WATER FLOW
^ RECIPROCAL REFERENCE TO RELATED REQUESTS
This application claims the benefit of the provisional patent application of E. U. A. serial number No. 60 / 116,565, filed on January 21, 1999.
FIELD OF THE INVENTION
The present invention relates to disposable cleaning articles useful for cleaning the skin, hair and any other site needing cleaning. These articles comprise a water insoluble substrate having a first and a second layer with holes and a cleaning component disposed adjacent to the water insoluble substrate where the cleaning component comprises one or more surfactants. Consumers use the items by moistening them with water and rubbing the area to be cleaned. The invention also encompasses methods for cleansing and conditioning skin and hair, cleaning dishes and other hard surfaces using the articles of the present invention.
BACKGROUND OF THE INVENTION
Personal care products, particularly cleaning and conditioning products, have traditionally been marketed in a variety of forms such as bar soaps, creams, lotions, and gels. Typically, these products have tried to satisfy a variety of criteria to be accepted by consumers. These criteria include cleaning effectiveness, skin sensation, softness to the skin, hair, and ocular mucosa, and volume of foam. Ideal personal cleansers should gently cleanse the skin or hair, causing little or no irritation, and should not leave skin or hair too dry after frequent use. It is also widely desired to administer said cleaning and conditioning benefits from a disposable product. Disposable products are convenient because they obviate the need to carry or store bottles, bars, jars, tubes, and other forms of clutter that are difficult to handle including cleaning products and other products capable of providing therapeutic or aesthetic benefits. Disposable products are also a more sanitary alternative to the use of sponge, scouring pad, or other cleaning implements that are intended for extensive reuse, because such implements can develop bacterial growth, unpleasant odors, and other undesirable characteristics related with repeated use.
The articles of the present invention surprisingly provide effective cleansing as well as therapeutic or aesthetic benefits to the skin and hair in a convenient, inexpensive and sanitary manner. The present invention provides the convenience of not needing to carry, store, or use either a separate cleaning implement (such as a scouring pad or sponge) and a cleaner. The articles of the present invention may also provide a therapeutic or aesthetic benefit in need without the need for a product that provides separate benefits. These articles are convenient for use because they are in the form of either a single personal disposable cleaning article or multiple disposable articles useful for cleaning as well as the application of a therapeutic or aesthetic benefit agent. In addition, these items are suitable for use with or in conjunction with other cleaning implements which are designed for more extensive use. In this manner, the articles of the present invention are discarded with or attached to a separate cleaning implement which is not easily disposable, for example, a bath towel or bath cloth. In addition, the disposable articles of the present invention can be adhered to a handle or handle suitable for moving the article on the surface to be cleaned. Although in the preferred embodiments the articles of the present invention are suitable for personal care applications, these may be useful in a variety of different industries such as automotive care., care of marine vehicles, domestic care, tableware care, animal care, etc. where the surfaces or areas need to be cleaned and / or apply a beneficial agent, for example, wax, conditioner, UV protector, etc. In the preferred embodiments of the invention, the articles are suitable for personal care applications and are useful for cleaning skin, hair, and similar surfaces that need cleaning. Consumers use these items when moistening them with water and rubbing the area to be cleaned. The article consists of a water-insoluble substrate having a first and a second defined layer and a cleaning component containing a surfactant. Without being limited by theory, the substrate improves foam production which in turn increases cleaning and exfoliation, and optimizes the administration and deposition of a beneficial therapeutic or aesthetic agent which can be contained within the article.
BRIEF DESCRIPTION OF THE INVENTION
The present invention relates to a disposable cleaning article comprising: a) a water insoluble substrate comprising: 1) a first layer with holes wherein the first layer has a water flow rate of about 0.4 cm3 / cm2 -sa about 20 cm3 / cm2-s; 2) a second layer attached to said first layer; and b) a cleaning component comprising one or more surfactants, said disposable component adjacent to said substrate. The present invention also relates to a method of cleansing the skin and hair which comprises the steps of: a) wetting said articles with water and b) contacting the skin or hair with the wetted articles. All percentages and ratios used herein, unless otherwise specified, are by weight and all measurements were made at 25 ° C, unless otherwise designated. The invention herein may comprise, consist of, or consist essentially of, the essential as well as optional ingredients and components described herein. All documents referred to herein include patents, patent applications, and printed publications, and are therefore incorporated by reference in their entirety in this description.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a plan view of an oval-shaped embodiment of the present invention. Figure 2 is an alternative plan view of an hourglass embodiment of the present invention. Figure 3 is a cross section of figure 1.
Figures 4 and 5 illustrate the possible positions of the cleaning component in relation to a beneficial agent in the multi-chamber embodiment of the article of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
As used herein, "disposable" is used in its ordinary sense to mean an article that is discarded or discarded after a limited number of use events, preferably less than 25, more preferably less than about 10, and more preferably less than about 2 total usage events. As used herein, "substantially dry" means that the articles of the present invention exhibit a moisture retention of less than about 0.95 gms, preferably less than about 0.75 gms, even more preferably less than about 0.5 gms, even more preferably less than about 0.25 gms, even more preferably less than about 0.15 gms, and more preferably, less than about 0.1 gms. The determination of moisture retention is discussed later. The term "activated by water", as used herein, means that the present invention is presented to the consumer in a dry form for use after moistening it with water. It was found that when the articles of the present invention include a surfactant that generates foam, they produce a foam or "activate" after contact with water and further agitation. Cleaning articles, particularly personal care cleaning articles, in the present invention comprise the following essential components.
I. Water insoluble substrate The articles of the present invention comprise a water insoluble substrate which also comprises at least two layers, ie a first layer with holes and a second layer which is attached to the first layer. Preferably, when used, the substrate layers are soft to the skin of the consumer. In any case, however, the first layer with holes and the second layer are each defined as having both an inner surface and an outer surface. In both cases, the inner surfaces of the layers are those that are inward or in the innermost portion of the article of the present invention where the outer surfaces of the layers are those that face outward or toward the outermost portion of the layer. Article. Generally, the orientation of the articles of the present invention can be defined so that the first layer with holes is closer to the side of the article suitable for fastening (i.e., the clamping side) while the second layer is closer to the side of the article that is put in contact with the area to be cleaned, for example, the side of the skin / contact site.
Without being limited by theory, the water insoluble substrate improves cleaning and therapeutic treatment. The substrate may have the same or different textures on each side such as on the clamping side of the article having a texture similar or different from that on the contact side with the site / skin. The substrate can act as an efficient sudsing and as an exfoliating implement. By physically contacting the skin or hair, the substrate significantly aids in the cleaning and removal of dirt, makeup, dead skin, and other debris. In preferred embodiments, however, the substrate is not abrasive to the skin.
A. First layer with holes The first layer with holes 8 of the present invention has a water flow rate of about 0.4 cm 3 / cm 2 -s to 20 cm 3 / cm 2 -s, more preferably about 1 cm 3 / cm 2 -s about 5 cm3 / cm2-s, even more preferably from about 1.5 cm3 / cm2-s to about 4 cm3 / cm2-s, and more preferably from about 2 cm3 / cm2-s to about 3 cm3 / cm2-s. The water flow rate can be determined using the method discussed below in the properties section. As used herein "with holes" means that the layer includes well-defined holes. Well-defined holes are typically surrounding the areas of the well-defined region. Also, as used herein, "with holes" encompasses holes, perforations, cavities, and the like. Well-defined holes can be waterproof (as in a film, which can be a formed film or a perforated film, for example), or permeable. The holes in the first layer are useful for enabling the passage of water flow through the material of the first layer. In one embodiment, the orifices of the present invention are characterized by the presence of aberrations on the surface of the petal-like boundary which tend to add a third dimensional character to the layer. Preferably, the first layer has at least about 1 hole / cm2. More preferably, the first layer has at least about 10 holes / cm 2, even more preferably at least about 100 holes / cm 2, even more preferably at least about 500 holes / cm 2, still more preferably at less than about 500 holes / cm 2, still more preferably at least about 1,000 holes / cm 2, and more preferably at least about 1,500 holes / cm 2. The first orifice layer can comprise any material with holes in which it is well known in the art which exhibits the requirement of water flow rate. Suitable materials include, but are not limited to, non-woven fabrics, woven fabrics, formed films, etc. Preferably, the first orifice layer comprises a film formed of plastic. Preferred plastics include those which are soft to the skin including, but not limited to, polyolefins such as low density polyethylenes (LDPE) and the like. In the present invention, a preferred embodiment includes a first orifice layer having micro-holes. As used herein, "with micro-holes" generally refers to layers that contain well-defined microscopic holes (ie, those not readily visible to the eye having 20/20 vision). Preferably, the micro-holes are characterized by the presence of petal-like aberrations on the boundary surface or at least one surface of the layer which adds a third dimensional character to the layer. On the other hand, "with macroorificies", as used herein, refers to a layer containing well-defined holes having an average diameter greater than about 300 microns. Preferably, the micro-holes are characterized by the presence of aberrations on the petal-like boundary surface on at least one surface of the layer so that the layer has a three-dimensional character and therefore fluid flow is facilitated from a surface from the layer to another surface of the layer. Suitable materials with micro-holes useful for the first layer of the present invention include, but are not limited to, those described in the co-pending application of E.U.A. Serial No. 08 / 326,571 and PCT application No. US95 / 07435, filed June 12, 1995 and published January 11, 1996 and the US patent. No. 4,629,643, issued December 16, 1986 to Curro et al., Which are incorporated herein by reference in their entirety. In another embodiment, the first layer of the present invention may comprise a composite material, ie, a material having one or more folds thereof or of different suitable materials merely physically superimposed, which are put together continuously (e.g., laminates, etc.) in a discontinuous pattern, or by joining them at the outer ends (or periphery) of the layer and / or at discrete locations. In this embodiment, the first layer is preferably selected from the group consisting of formed films and films formed composed of materials. Furthermore, in this embodiment, the first layer can be a formed film composed of material comprising at least one formed film and at least one non-woven fabric where the layer is formed under vacuum. A suitable composite film material includes, but is not limited to, a vacuum laminated material that forms composite films formed of a combination of a nonwoven polypropylene material having a basis weight of 30 grams with a formed film. Without being limited by theory, the first layer with holes is useful for controlling the flow of water through the clamping side of the substrate of the article in order to provide controlled wetting and to extend the useful life of the cleaning component, i.e. surfactant agent, so that it lasts through at least one shower or bathing or cleaning experience (window, car, bathroom, floor, dog, tableware, etc) cleaning experience. Impervious substrate layers tend to completely prohibit or severely limit water flow so the cleaning component is often slow to wet or foam although the substrate layers are highly permeable and tend to rapidly release the cleaning components from the substrate. way that this is not presented through the entire shower or bath experience. Therefore, it is preferable that the differential (or gradient) flow of at least 2.5 cm3 / cm2-s be present between the first and second layer of the articles of the present invention. More preferably, a differential flow of at least 3.0 cm3 / cm2-s, and more preferably of at least 4.0 cm3 / cm2-s exists between the first and second layers of the articles of the present invention.
. B Second layer The water insoluble substrate of the present invention further comprises a second layer 2 attached to a first layer. This second layer may be useful for engaging or retaining the cleaning component within the article. In addition, the second layer may also be suitable for contact with the skin in which case it is preferred that the layer be smooth to the skin. It may also be desirable to carve boards, pots and pans, bathroom areas, etc. The materials suitable for the second for the second layer are selected from the group consisting of non-woven fabrics, woven fabrics, sponges (ie, both natural and synthetic), woven polymer meshes (also referred to herein as "cotton fabric"). ), formed films, cottons, and combinations thereof. Preferred embodiments of the second layer employ non-woven fabrics. As used herein, "non-woven fabrics" means the layer comprising fibers which are not woven into a fabric but rather are formed into a layer, mat or bearing layer. The fibers can either be random (i.e., randomly aligned) or can be carded (i.e., bent to orient them in a principal direction). In addition, the nonwoven fabric of the second layer can be made of a composite material, composed of a combination of additional layers, i.e., folds, or random and carded fibers. The non-woven fabrics of the second layer can comprise a variety of both natural and synthetic materials. As used here, "natural" means that materials are derived from plants, animals, insects or byproducts of plants, animals, and insects. As used herein, "synthetic" means that materials are obtained primarily from various man-made materials and from natural materials which have been further altered. The conventional base of starting material is usually a fibrous network comprising any of the common synthetic or natural fibers of textile length, or combinations thereof. Non-limiting examples of natural materials useful in the present invention include, but are not limited to, silk fibers, keratin fibers and cellulosic fibers. Non-limiting examples of keratin fibers include those selected from the group consisting of wool fibers, camel hair fibers, and the like. Non-limiting examples of cellulosic fibers include those selected from the group consisting of wood pulp fibers, cotton fibers, hemp fibers, jute fibers, flax fibers, and combinations thereof. Fibrous cellulosic materials are preferred in the present invention. Non-limiting examples of the synthetic materials useful in the present invention include those selected from the group consisting of acetate fibers, acrylic fibers, cellulose ether fibers, mono-acrylic fibers, polyamide fibers, polyester fibers, polyolefin fibers, polyvinyl alcohol fibers, rayon fibers, polyethylene foam, polyurethane foam, and combinations thereof. Examples of suitable synthetic materials include acrylics such as acrilan, creslan, and the acrylonitrile-based fiber, orlon; cellulose ester fibers such as cellulose acetate, arnel, and accelerate; polyamides such as nylon (e.g., nylon 6, nylon 66, nylon 610, and the like); polyesters such as fortrel, kodel, and the fibers of polyethylene terephthalate, dacron; polyolefins such as polypropylene, polyethylene; polyvinyl acetate fibers; polyurethane foam and combinations thereof. These and other suitable fibers and the nonwoven materials prepared therefrom are generally described in Riedel, "Nonwoven Bonding Methods and Materials," Nonwoven Worl (1987); The American Encvclpoedia, vol. 11, pp. 147-153, and vol. 26, pp. 566-581 (1984) patent of E.U.A. No. 4,891, 227 of Thaman et al., Issued January 2, 1990; and the patent of E.U.A. No. 4,891, 228, each of which is incorporated herein by reference in its entirety. A preferred nonwoven fabric of the second layer comprises wadding which comprises synthetic fibers. Preferred synthetic fibers can be selected from the group consisting of nylon fibers, rayon fibers, polyolefin fibers, polyester fibers, and combinations thereof. Preferred polyolefin fibers are fibers selected from the group consisting of polyurethane, polypropylene, polybutylene, polypentene, and combinations and copolymers thereof. The most preferred polyolefin fibers are fibers selected from the group consisting of polyethylene, polypropylene, and combinations and copolymers thereof. Preferred polyester fibers are fibers selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, polycyclohexylenedimethylene terephthalate, and combinations and copolymers thereof. The most preferred polyester fibers are fibers selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, and combinations and copolymers thereof. The most preferred synthetic fibers comprise hard-fiber polyester fibers which comprise polyethylene terephthalate homopolymers. Suitable synthetic materials can include unique solid (i.e., chemically homogeneous) components, multi-constituent fibers (i.e., more than one type of material made from each fiber), and multicomponent fibers (i.e., synthetic fibers comprising two or more). more types of different filaments which are somehow interwoven to produce a larger fiber), and combinations thereof. Preferred fibers include bicomponent fibers, multi-constituent fibers, and combinations thereof. Said two-component fibers may have a shell-core configuration or a side-by-side configuration. In any case, the non-woven fabric layer may comprise either a combination of fibers comprising the above-listed materials or fibers which themselves comprise a combination of the aforementioned materials.
For core-shell fibers, preferably, the cores comprise materials selected from the group consisting of polyesters, polyolefins having a Tg of at least about 10 ° C greater than the shell material, and combinations thereof. Conversely, the bicomponent fiber covers preferably comprise materials selected from the group consisting of polyolefins having a Tg of at least about 10 ° C lower than the core material, polyolefin polyesters having a Tg of at least about 10 ° C lower than the core material, and combinations thereof. In any case, side-by-side configuration, shell-core configuration, or single solid component configuration, the fibers of the non-woven fabric of the first layer may exhibit a helical or spiral or crimped configuration, particularly the bicomponent type fibers. . Polymeric networks (referred to herein as "cotton canvas" materials) are also useful herein as materials for the second layer as described in detail in U.S. Pat. 4,636,419 which is incorporated herein by reference. The cotton canvas materials can be formed directly in the extrusion die or can be derived from films extruded by fibrillation or by enhancement, followed by stretching and separation. The cotton canvas material can be derived from a polyolefin such as polyethylene or polypropylene, or copolymers thereof, poly (butylene terephthalate), polyethylene terephthalate, nylon 6, nylon 66, and the like. In addition, cotton canvas materials can be multi-constituent (i.e., can be made of more than one material), multicomponent (i.e., a material that includes at least two types of filaments). Cotton canvas materials are available from various commercial sources. A preferred cotton canvas material useful in the present invention is a polypropylene cotton canvas material, available from Conwed Plastics (Minneapolis, MN). Another preferred cotton canvas material is a polyethylene cotton canvas material, particularly a low density polyethylene, which is also available from Conwed. In another aspect of the present invention, applicants have also discovered that incorporation of cotton canvas material into the first orifice layer or second layer, followed by heating, provides macroscopic three-dimensional characteristics to the article. This macroscopic tridimensionality has been found to greatly improve the cleaning performance of the article, even when the basis weight of the sheet is essentially uniform. In particular, macroscopic tridimensionality is achieved when the cotton / fiber canvas material composite is subjected to heating, and then cooled. This procedure results in shrinkage (in the X-Y dimension) of the cotton canvas material and, as a result of this, it joins with the fibers, providing a sheet with a greater three-dimensionality. As used herein, the term "X-Y dimension" refers to the orthogonal plane of the thickness of the layer, fold, or article, or a component thereof. The dimensions X and Y, usually correspond to the length and width, respectively, of the sheet or a sheet component. As used herein, the term "Z dimension" refers to the orthogonal dimension of the length and thickness of the cleaning sheet of the present invention, or a component thereof. The Z dimension usually corresponds to the thickness of the sheet. The degree of added three-dimensionality is controlled by the level of shrinkage (e.g., by heating) the combination of cotton linen / cleaning material. The inclusion of a cotton material is particularly beneficial when the fiber aspect of the structure is a non-woven fabric, particularly when the structure is hydroentangled. Additional details of the suitable cotton canvas material containing non-woven fabric can be found in the co-pending application of E.U.A. No. 09 / 082,396 and 09 / 082,349, both filed on May 20, 1998, by Fereshtehkho et al., Which are incorporated herein by reference in their entirety. Additional non-woven fabrics suitable for the second layer can be made from natural material consisting of nets or sheets more commonly formed of a thin screen from a liquid suspension of the fibers. See C.A. Hampel et al., The Encvclopedia of Chemistrv third edition, 1973, pp. 793-795 (1973); The American Encvclopedia, vol. 21, pp. 376-383 (1984); and G.A. Smook, Handbook of Pulp and Paper Technologies, Technical Association for the Pulp and Paper Industry (1986); which are incorporated as a reference here in its entirety.
The natural nonwoven fabrics useful for the second layer of the present invention can be obtained from a wide variety of commercial sources. Non-limiting examples of suitable commercially available paper layers useful herein include Airtex®, an air-enhanced cellulosic layer having a basis weight of about 5.96 grams / meter2, available from James River, Green Bay, Wl; and Walkisoft®, a relief cellulosic layer having a basis weight of about 6.3 grams / meter2, available from Walkisoft U.S.A., Mount Holly, NC. Additional suitable nonwoven fabrics include, but are not limited to, those described in the U.S.A. Nos. 4,447,294 issued to Osborn on May 8, 1984; 4,603,176 issued to Bjorkquist on July 29, 1986; 4,981, 557 issued to Bjorkquist on Jan. 1, 1991; 5,085,736 issued to Bjorkquist on February 4, 1992; 5,138,002 issued to Bjorkquist on August 8, 1992; 5,2623,007 issued to Phan et al., November 16, 1993; 5,264,082 issued to Phan et al. on November 23, 1993; 4,637,859 issued to Trokhan on January 20, 1987; 4,529,480 issued to Trokhan on July 16, 1985; 4,687,153 issued to McNeil on August 18, 1987; 5,223,096 issued to Phan et al. on June 29, 1993 and 5,679,222 issued to Rasch et al. on October 21, 1997, each of which is incorporated herein by reference in its entirety. Methods for making non-woven fabrics are well known in the art. Generally, these non-woven fabrics may be made by a process of laying to the air, laying to the water, blowing the melt, shaping, spinning, forming, or carding process in which the fíbras or fílamientos first cut to the desired length To form long strands, they are passed into water or a stream of air, and then deposited on a screen through which the fibers are air dried or water is passed. The resulting layer, regardless of its production method or composition, is then subjected to at least one of several steps of joining operations to anchor the individual fibers together to form a self-supporting network. In the present invention the nonwoven material can be prepared by a variety of methods including, but not limited to, hydroentangling, thermal bonding or thermobinding, and combination of these processes. Non-woven fabrics made from synthetic materials useful in the present invention can also be obtained from a wide variety of commercial sources. Non-limiting examples of suitable non-woven fabrics for useful layer materials herein include HEF 40-047 an orifice hydroentangling material containing about 50% rayon and 50% polyester, and having a basis weight of about 3.6 grams per square meter (grams / meter2), available from Veratec, Inc., Walpole, MA; HEF 140-102, a hydroentangling material with holes containing about 50% rayon and 50% polyester, and having a basis weight of about 56 grams / meter2, available from Veratec, Inc., Walpole, MA; Novonet® 149-616, a thermally bonded network pattern material containing about 100% polypropylene, and having a basis weight of about 50 grams / meter2, available from Veratec, Inc., Walpole, MA; Novenet® 149-801 a material with thermo-bonded web pattern containing about 69% rayon, about 25% polypropylene, and about 6% cotton, and having a basis weight of about 75 grams / meter2, available from Veratec, Inc. Walpole, MA; Novenet® 149-191, a thermo-bonded network pattern material containing about 69% rayon, about 25% polypropylene, and about 6% cotton, and having a basis weight of about 100 grams / meter2 , available from Veratec, Inc. Walpole, MA; HEF Nubtex® 149-801, a hydro-wound material with holes, with protuberances, containing about 100% polyester, and having a basis weight of about 70 grams / meter2, available from Veratec, Inc. Walpole, MA; Keybak® 951 V, a material with holes formed in dry, containing about 75% rayon, around 25% acrylic fibers, and having a basis weight of about 43 grams / meter2, available from Chicopee, New Brunswick, NJ; Keybak® 1368, and an orifices material, containing about 75% rayon, about 25% polyester, and having a basis weight of about 39 grams / meter2, available from Chicopee, New Brunswick, NJ; Duralace® 1236, and a hydroentangling material, with holes, containing about 100% rayon, and having a basis weight of about 40 grams / meter2 to about 115 grams / meter2, available from Chicopee, New Brunswick , NJ; Duralace® 5904, and a hydro-coiled material, with holes, containing about 100% polyester, and having a basis weight of about 40 grams / meter2 to about 115 grams / meter2, available from Chicopee, New Brunswick , NJ; Sontaro 8868, a hydro-coiled material, containing about 50% cellulose and about 50% polyester, and having a basis weight of about 60 grams / meter2, available from Dupont Chemical Corp. The second layer can also be being a polymeric mesh sponge as described in European Patent Application No. EP 702550A1 published on March 27, 1997, which is hereby incorporated by reference in its entirety. Said polymeric mesh sponges comprise a plurality of folds of an extruded tubular netting prepared from a strong flexible polymer, such as polymers of addition of olefin monomers and polycarboxylic acid polyamides. The second layer can also be made from formed films and composite materials, ie, multiple materials containing films formed. Preferably, said films formed comprise plastics which tend to be soft to the skin. Suitable soft plastic film forms include, but are not limited to, polyolefins such as low density polyethylenes (LDPE). In such cases when the second layer comprises a film formed by plastic, it is preferred that the second layer has holes, for example, micro-holes or macro-formations. Preferably, the second layer comprises a film formed by plastic which only have micro-holes. The aberrations of the surface of the micro-holes, ie the male side, are preferably located on the inner surface of the second layer and preferably face towards the interior of the substrate, that is to say towards the cleaning component. In preferred embodiments which include orifices having petal-like aberrations on the boundary surface, without being limited by theory, it is believed that when the surface aberrations of the orifices facing the cleaning component containing surfactant, the application pressure by hand to the article allows the petal-like boundaries of the surface aberrations to fold inward thereby creating numerous valves on the inner surface of the layer which is an effect that measures the cleaning component contained within the article therefore extending the useful life of the article. In a more preferred embodiment, the second layer comprises a film formed by plastic which has both microorific and macroorific. In such embodiments, the second layer is well suited to contact the areas to be cleaned giving the towel-like feel for said films with micro-holes. Preferably, in such an embodiment, the surface aberrations of the micro-holes that are opposite the aberrations of the macro-orifice surface of the second layer. In this instance it is believed that the macroorifices maximize the humidification / generation of general foam of the article by means of the three-dimensional thickness formed by the aberrations of the surface which are under constant compression and compression during the use of the article therefore creating a bellows of foam. In certain embodiments of the present invention the second layer has holes. In said examples it is preferred that the second layer has at least about one orifice / cm2. More preferably, the second layer has at least about 10 holes / cm2, even more preferably at least about 100 holes / cm2 even more preferably at least 500 holes / cm2 even more preferably about 1000 holes / cm2 and more preferably at less about 1500 holes / cm2. The most preferred embodiments of the present invention include a layer which has a water flow rate of about 5 cm3 / cm2-s about 120 cprVcm2, more preferably from about 10 cm3 / cm2-s to about 90 cm3 / cm2-s, even more preferably from 10 cm3 / cm2-s about 50 cm3 / cm2-s and more preferably from about 15 cm3 / cm2-s to about 40 cm3 / cm2-s. Suitable formed films and films formed containing useful composites in the second layer of the present invention include but are not limited to those described in US Pat. No. 4,342,314 issued to Radel et al, on August 3, 1982, commonly assigned to the co-pending application of E.U.A. Serial No. 08 / 326,571 and PCT Application No. US95 / 07435, filed June 12, 1995 and published January 11, 1996, and US Patent No. 4,629,643, issued to Curo et al, December 16, 1986, each of which is incorporated here as a reference in its entirety. Additional materials suitable for use in the second layer include those selected from the group consisting of formed films and films formed composed of materials. In addition, the second layer can be a film formed of a composite material comprising at least one formed film and at least one non-woven fabric wherein the layer is formed as an empty layer. A suitable formed film of composite material includes, but is not limited to, a film material formed by a vacuum laminated composite formed by the combination of a carded polypropylene nonwoven fabric having a basis weight of 30 gsm with a formed film.
Cleaning Component The articles of the present invention comprise a cleaning component 10 which further comprises one or more surfactants. The cleaning component is arranged between the first layer and the second layer of the water-insoluble substrate. The articles of the present invention comprise from about 0.5% to about 3000%, preferably from about 50% to about 2000%, and more preferably from about 100% to about 1500% based on the weight of the unsolvable substrate. in water, of the surfactant. Also, in the articles of the present invention, they preferably comprise at least about 1 gram, by weight of the water-insoluble substrate, of a surfactant. Therefore, the cleaning component can be added to the substrate without requiring a drying process. The surfactants of the cleaning components may be surfactants that generate foam or that do not generate foam. As used herein, "foaming surfactant" means a surfactant, which, when combined with water and mechanically stirred, generates a foam or suds. It is preferred, however, that surfactants be those that generate foam since the increased foam is important to consumers as an indication of cleaning effectiveness. In certain embodiments, surfactants or combinations of surfactants should be moderate. As used herein, "moderate" means that the surfactant as well as the articles of the present invention prove to be moderate to the skin as compared to the medium terglyceryl-sulfonate surfactants (AGS) synthetic surfactant-based surfactants, i.e. , synbar. The methods to measure the moderation, or conversely the irritation, of the surfactants contained in the articles, are based on the test of destruction of the skin barrier. In this test, the greater the moderation of the surfactant, the less destruction of the skin barrier is observed. The destruction of the skin barrier is measured by a relative amount of radiolabeled water (labeled with tritium) (3H-H2O) which passes from the test solution through the skin epidermis into a pH regulator physiological content in the diffusion chamber. This test is described by T.J. Franz in the L. Invest Dermatol. 1975, 94 pp. 190-195, and in the patent of E.U.A. No. 4,673,525, to Small et al, issued June 16, 1987, which are incorporated herein by reference herein in their entirety. Other test methodologies can be used to determine moderation of the surfactant that are well known to those skilled in the art.
A wide variety of surfactants that produce foam are useful herein and include those selected from the group consisting of anionic foaming surfactants, nonionic surfactants that produce foam, cationic surfactants that produce foam, amphoteric surfactants that produce foam, and mixtures thereof.
Anionic Surfactants That Produce Foam The non-limiting examples of the anionic foam-producing surfactants useful in the compositions of the present invention are described in McCutcheon's book, Detergent and Emulsifiers, North American edition (1986), published by Allured Publishing Corporation; McCutcheon's, Functional Materials, North American Edition (1992); and the patent of E.U.A. No. 3,929,678, Laughiin et al, issued December 30, 1975, each of which is hereby incorporated by reference in its entirety. A wide variety of anionic surfactants are potentially useful here. Non-limiting examples of anionic surfactants that produce foam include those selected from the group consisting of alkyl sulfates and teralkyl sulfates, sulphated monoglycerides, sulphonated olefins, arylalkyl sulphonates, primary or secondary alkane sulphonates, alkylsulfotes, acyltaurates, acylcyanates, alkylglyceryl ether sulfonates, methyl-fumed esters, suifonated fatty acids, alkyl phosphates, acyl glutamates, acyl salcocinates, alkyl sulfoacetates, acylated peptides, teralkyl carboxylates, acyl lactylates, anionic surfactant fluoro-agents, and combinations thereof. Combinations of anionic surfactants can be effectively used in the present invention. Anionic surfactants for use in the cleaning components include alkyl sulfates and teralkyl sulfates. These materials have the effective formula R10-SO3M and R1 (CH2H4O) xO-SO3M, where R1 is an unsaturated or unsaturated, branched or unbranched alkyl group of about 8 to about 24 carbon atoms, x is 1 to 10, and M is a water soluble cation such as ammonium, sodium, potassium, magnesium, triethanolamine, diethanolamine, and monoethanolamine. Alkyl sulfates are typically made by sulfation of monohydric alcohols (having about 8 to about 24 carbon atoms) using sulfur trioxide or other known sulfation techniques. Teralkyl sulfates are typically made as condensation products of ethylene oxide and monohydric alcohols (having about 8 about 24 carbon atoms) and then sulfated. These alcohols can be derived from fat, for example, coconut oil or bait, or can be synthetic, specific examples of the alkyl sulfates that can be used in the cleaning components are sodium, ammonium, potassium, magnesium, or salts TEA of lauryl or myristyl sulfate. Examples of tertiary alkyl sulfate which can be used in the cleaning components are sodium, ammonium, potassium, magnesium, or TEA salts of lauryl or myristyl sulfate. Examples of tertiary alkyl sulfate which may be used include ammonium, sodium, magnesium, or TEA laureth-3 sulfate. Another suitable class of anionic surfactants are the sulphated monoglycerides of the form R 1 CO-O-CH 2 -C (OH) H-CH 2 -O-S0 3M, wherein R 1 is a saturated or unsaturated, branched or unbranched alkyl group of about 8. to about 24 carbon atoms, and M is a water-soluble cation such as ammonium, sodium, potassium, magnesium, triethanolamine, diethanolamine and monoethanolamine. These are typically made by the reaction of glycerin with fatty acids (having about 8 to about 24 carbon atoms) to form a monoglyceride and the subsequent sulfation of this monoglyceride with sulfur trioxide. An example of a sulfated monoglyceride is sodium cocomonoglyceride sulfate. Other suitable anionic surfactants include olefin sulfonates of the form R1SO3M, where R1 is a monoolefin having about 12 to about 24 carbon atoms, and M is a water-soluble cation such as ammonium, sodium, potassium, magnesium, triethanolamine, diethanolamine and monoethanolamine. These compounds can be produced by the sulfonation of alpha olefins by means of non-complex sulfur trioxide, followed by the neutralization of the acid reaction in admixture under conditions such that any sulfonate that has been formed in the reaction is hydrolysed to give the corresponding alkyl alkanesulfonate. . An example of a sulfonated olefin is sodium C14 / C16 alpha olefin sulfonate.
Other suitable anionic surfactants are the alkylbenzene sulphonates of the form R1-C6H4S03M, where R1 is a branched or unbranched saturated or unsaturated alkyl group of from about 8 to about 24 carbon atoms, and m is a water-soluble cation such such as ammonium, sodium, potassium, magnesium, triethanolamine, diethanolamine, and monoethanolamine. These are formed by the sulfonation of linear benzene lauryl with sulfur trioxide. An example of this ammonium surfactant is sodium dodecyl benzene sulfonate. Even other suitable anionic surfactants for this cleaning component include the primary or secondary alkane sulphonates of the form R1S03M wherein R1 is a saturated or unsaturated, branched or unbranched alkyl chain of from about 8 to about 24 carbon atoms, and M is a water soluble cation such as ammonium, sodium, potassium, magnesium, triethanolamine, diethanolamine and monoethanolamine. These are commonly formed by the sulfonation of paraffins using sulfur dioxide in the presence of chloride and ultraviolet light or other known sulfonating method. Sulfonation can occur in the first or secondary positions of the alkyl chain. An example of an alkane sulfonate useful in the present invention is alkali metal or C13-C17 paraffin sulfonates of ammonium. Even other suitable anionic surfactants are alkyl sulfoxinates, which include disodium N-octadecylsulfosuccinamate, diammonium lauryl sulfosuccinate; tetrasodium N (1,2-dicarboxyethyl) -N-octadecylsulfosuccinate; Sodiosulfosuccinic acid diayl ester; sulfosuccinic sodium dihexyl ester; and dioctyl esters of sodium sulfosuccinic acid. Also useful are taurates which are based on taurine, which is also known as 2-aminoethanesulfonic acid. Examples of taurates include N-alkyl taurines such as those prepared by reacting dodecylamine with sodium isothionate as detailed in the US patent. No. 2,685,072 which is incorporated herein by reference in its entirety. Other examples based on taurine include acyl taurines formed by the reaction of n-methyl taurine with fatty acids (having about 8 to about 24 carbon atoms). Another class of anionic surfactants suitable for use in the cleaning components is acyl isethionate. Acyl isethionates typically have the formula R 1 CO-O-CH 2 CH 2 SO 3 M wherein R 1 is a saturated or unsaturated, branched or unbranched alkyl group having about 10 to 30 carbon atoms, and M is cation. These are typically formed by the reaction of fatty acids (having about 8 to about 30 carbon atoms) with an alkali metal isethionate. Non-limiting examples of these acylcyanates include ammonium cocoyl isethionate, sodium cocyleethionate, sodium lauroyl isethionate and mixtures thereof. Even other suitable anionic surfactants are the alkylglyceryl ether sulfonates of the form R1-OCH2-C (OH) H-CH2-SO3M, where R1 is a saturated or unsaturated, branched or unbranched alkyl group of about 8 to about 24 carbon atoms, and n is a water-soluble cation such as ammonium, sodium, potassium, magnesium, triethanolamine, diethanolamine and monoethanolamine. These can be formed by the reaction of epichlorohydrin and sodium bisulfite with fatty alcohols (having from about 8 to about 24 carbon atoms) or other known methods. An example is co-glyceryl sodium ether sulfonate. Other suitable anionic surfactants include the suifonated fatty acids of the form R1-CH (SO4) -COOH and the methylsulfonated esters of the form R1-CH (SO4) -CO-O-CH3, where R1 is a saturated or unsaturated alkyl group saturated, branched or unbranched from about 8 to about 24 carbon atoms. These may be formed by the sulfonation of fatty acids or alkylmethyl ethers (having from about 8 to about 24 carbon atoms) with sulfur trioxide or by other known sulfonating techniques. Examples include alpha-sulfonated coconut fatty acids and methyl biluryl esters. Other anionic materials include phosphates such as monoalkyl salts, dialkyl, and trialkyl phosphate formed by the reaction of phosphorus pentoxide with branched or unbranched monohydric alcohols having from about 8 to about 24 carbon atoms. These could be formed by other known phosphonation methods. An example for this class of surfactants is monosodium or dilauryl phosphate. Other ammonium materials include acylglutamates corresponding to the formula R1CO-N (COOH) -CH2CH2-CO2M where R1 is a saturated or unsaturated, branched or unbranched alkyl or alkenyl group of from about 8 to about 24 carbon atoms, and M is a cation soluble in water. Non-limiting examples thereof may include sodium lauroylglutamate and sodium cocoylglutamate. Other anionic materials include alkanoyl sarcosinates corresponding to the formula R1 CON (CH3) -CH2CH2-CO2M where R1 is a saturated or unsaturated, branched or unbranched alkyl or alkenyl group of about 10 to about 20 carbon atoms, and M is a cation soluble in water. Non-limiting examples of which include sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, and ammonium lauroyl sarcosinate. Other anionic materials include alkyl ether carboxylates corresponding to the formula R1 (OCH2CH2) x-OCH2-CO2M where R1 is a saturated or unsaturated, branched or unbranched alkyl or alkenyl group of about 8 to about 24 carbon atoms, x is 1 to 10, and M is a water soluble cation. Non-limiting examples of which include sodium laurethcarboxylate. Other anionic materials include acyllactylates corresponding to the formula R1CO- [O-CH) (CH3) -CO] x -CO2M wherein R1 is a saturated or unsaturated, branched or unbranched alkyl or alkenyl group of about 8 to about 24 carbon atoms, x is 3, and M is a water-soluble cation. Non-limiting examples thereof include sodium cocoilactylate. Other anionic materials include carboxylates, non-limiting examples of which include sodium lauroyl carboxylate, sodium cocoylcarboxylate, and ammonium lauroyl caboxylate. Anionic surfactant fluoroagents can also be used. Other anionic materials include natural soaps derived from the saponification of vegetable and / or animal fats and oils in which sodium laurate, sodium myristate, palmitate, stearate, seboato, and cocoate are included. Any counter cation, M, can be used in the anionic surfactant. Preferably, the counter cation is selected from the group consisting of sodium, potassium, ammonium, monoethanolamine, diethanolamine and triethanolamine. More preferably, the counter cation is ammonium.
Nonionic Foaming Surfactants Non-limiting examples of nonionic foaming surfactants for use in the compositions of the present invention are described in McCutchteon's book, Detergents and emulsifiers. North American edition (1986), published by allured Publishing Corporation; and in McCutchteon's, Functional Materials, North American etidion (1992); both are incorporated as a reference here in their entirety. The foaming nonionic surfactants used herein include those selected from the group consisting of alkyl glycosides, alkyl polyglucosides, polyhydroxy fatty acid amides, alkoxylated fatty acid esters, sucrose esters, amine oxides, and mixtures of the same.
Alkyl glucosides and alkyl polyglucosides are also useful herein, and can be broadly defined as condensation products of long chain alcohols, for example, C8-30 alcohols, with sugars or starches or polymers of sugars or starches, i.e. , glycosides or polyglucosides. These compounds can be represented by the formula (S) n-O-R where S is a sugar portion such as glucose, fructose, mannose, and galactose; N is an integer from about 1 to about 1000, and R is an alkyl group of C8-30. Examples of the long chain alcohols from which the alkyl group can be derived include decyl alcohol, cetyl alcohol, stearyl alcohol, lauryl alcohol, myristyl alcohol, oleyl alcohol, and the like. Preferred examples of these surfactants include those where S is a glucose portion, R is an alkyl group of C8-20, n is an integer from about 1 to about 9. Commercially available examples of these surfactants include decylpolyglucoside (available as APG 325 CS from Henkel) and lauryl polyglucosides (available as APG 60CS and 625 CS from Henkel). Also useful are the sucrose ester surfactants such as sucrose cocoate and sucrose laurate. Other useful nonionic surfactants include the amine surfactants of polyhydroxy fatty acid, the most specific examples of which include glucosamines, which correspond to the structural formula:
wherein: R 1 is H, CrC alkyl, 2-hydroxyethyl, 2-hydroxy-propyl, preferably C 1 -C 4 alkyl, more preferably methyl or ethyl, more preferably methyl; R2 is C5-C31 alkyl or alkenyl, preferably C7-C19 alkyl or alkenyl, more preferably Cg-C7 alkyl or alkenyl, more preferably Cn-C5 alkyl or alkenyl; and Z is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain such as at least 3 hydroxyls connected to the chain, or an alkoxylated derivative (preferably ethoxylated or propoxylated) thereof. Z preferably is a sugar portion selected from the group consisting of glucose, fructose, maltose, lactose, galactose, mannose, xylose, and mixtures thereof. A particularly preferred surfactant corresponds to the aforementioned structure is N-methyl coconut alkyl glucoside amide (ie, wherein the R2CO- portion is derived from coconut oil fatty acids). Methods for making compositions containing polyhydroxyamine fatty acids are described, for example, in British Patent Specification 809,060, published February 18, 1959 by Thomas Hedley & Co., Ltd .; U.A. Patent No. 2,965,576, to E. R. Wilson, issued December 20, 1960; U.A. Patent No. 2,703,798, by A. M. Schwartz, issued March 8, 1955; and the patent of E. U. A. No. 1, 985,424, of Piggott, issued on December 25, 1934; each of which is incorporated here as a reference in its entirety. Other examples of nonionic surfactants include amine oxide. The amine oxides correspond to the general formula R? R2R3N- Owherein R1 contains an alkyl, alkenyl or monohydroxy alkyl radical of from about 8 to about 18 carbon atoms, from 0 to about 8 portions of ethylene oxide, and from 0 to about a glyceryl portion, and R2 and R3 contain from about 1 to about 3 carbon atoms and from about 0 to about 1 hydroxy group, for example, methyl, ethyl, propyl, hydroxyethyl, or hydroxypropyl radicals. The arrow in the formula is a conventional representation of a semipolar link. Examples of amine oxides suitable for use in this invention include dimethyl dodecylamine oxides, oleidi (2-hydroxyethyl) amine oxide, dimethyloctylamine oxide, dimethyldecylamine oxide, dimethyl tetradecylamine oxide, 3,6,9-trioxaheptadecyldietylamine oxide. , di (2-hydroxyethyl) -tetradecylamine oxide, 2-dodecoxyethyldimethylamine oxide, 3-dodecoxy-2-hydroxypropyl (3-hydroxypropyl) amine oxide, dimethylhexadecylamine oxide. Non-limiting examples of the preferred nonionic surfactants for use herein are those selected from the group consisting of C8-C14 glucose amines, C8-C14 alkyl polyglucosides, sucrose cocoate, sucrose laurate, lauramine, cocaine oxide, and mixtures thereof.
Cationic surfactant foaming agents Cationic foaming surfactants are also useful in the articles of the present invention. Suitable cationic foaming surfactants include, but are not limited to, fatty amines, quaternary diase amines, quaternary amines, trigrams, quaternary aminothinium amines, and combinations thereof. Suitable fatty amines include monoalkyl quaternary amines such as cetyltrimethylammonium bromide. A suitable quaternary amine is dialkylamidoethyl hydroxyethylammonium methosulfate. Fatty amines, however, are preferred. It is preferred that a foaming impeller be used when the cationic foaming surfactant is the main foaming surfactant of the cleaning component. Additionally, nonionic surfactants have been found particularly useful in combination with said cationic foaming surfactants.
Amphoteric Foaming Surfactants The term "amphoteric foaming surfactant", as used herein, is also intended to encompass zwitterionic surfactants, which are well known to formulators skilled in the art as a subpopulation of amphoteric surfactants. A wide variety of amphoteric foaming surfactants can be used in the compositions of the present invention. Particularly useful are those which are broadly described as derivatives of secondary aliphatic and tertiary amines preferably when the nitrogen is in a cationic state, in which the aliphatic radicals may be straight or branched chains and where one of the radicals contains a soluble soluble group. in water, for example, carboxy, sulfonate, sulfate, phosphate, or phosphonate.
Non-limiting examples of the amphoteric surfactants useful in the compositions of the present invention are described in McCutcheon's book, Detergents and Emulsifiers, North American edition (1986), published by Publishing Corporation; and that of McCutcheon, Functional Materials, North American Edition (1992); both are incorporated here as a reference in their entirety. Non-limiting examples of amphoteric or zwitterionic surfactants are those selected from the group consisting of betaines, sultaines, hydroxysultaines, alkyliminoacetates, iminodialkanoates, aminoalkanoates, and mixtures thereof. Examples of betaines include the higher alkyl betaines, such as cocodimethyl carboxymethyl betaine, lauryl dimethyl carboxymethyl betaine, lauryl dimethyl alphacarboxyethyl betaine, cetyldimethyl carboxymethyl betaine, cetyldimethyl betaine (available as Lonzaine 16SP from Lonza Corp.), lauryl bis- (2-hydroxyethyl) carboxymethyl betaine, oleyldimethyl gamma-carboxypropyl betaine, lauryl bis- (2-hydroxypropyl) alpha-carboxyethyl betaine, cocodimethyl sulphopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl bis- (2) betaine -hydroxyethyl) sulfopropyl, amidobetaines and amidosulfobetaines (where the radical RCONH (CH2) 3 is bonded to the nitrogen atom of betaine), olell betaine) available as amphoteric Velvetex OLB-50 from Henkel), and cocamidopropyl betaine (available asVelvetex BK-35 and BA-35 from Henkel).
Examples of sultaines and hydroxysultains include materials such as cocamidopropyl hydroxysultaine (available as Mirataine CBS from Rhone-Poulenc). Preferred amphoteric surfactants for use herein have the following structure:
O R2 R1- (C-NH- (CH2) m) n-N-R4 -? - R3
where R1 is an unsubstituted, saturated or unsaturated, straight or branched alkyl chain having from about 9 to about 22 carbon atoms. The preferred R1 has from about 11 to about 18 carbon atoms; more preferably from about 12 to about 18 carbon atoms; more preferably still from about 14 to about 18 carbon atoms; m is an integer from 1 to about 3, more preferably from about 2 to about 3, and more preferably about 3; n is either 0 or 1, preferably 1; R2 and R3 are independently selected from the group consisting of alkyl having from 1 to about 3 carbon atoms, unsubstituted or mono-substituted with hydroxy, R2 and R3 preferred are CH3; X is selected from the group consisting of CO2, SO3 and SO; R4 is selected from the group consisting of saturated or unsaturated alkyl chains; linear or branched, unsubstituted or mono-substituted with hydroxy, having from about 1 to about 5 carbon atoms. When X is CO2, R4 preferably has 1 or 3 carbon atoms, more preferably one carbon atom. When X is SO3 or S0, R4 preferably has from about 2 to about 4 carbon atoms, more preferably 3 carbon atoms. Examples of amphoteric surfactants of the present invention include the following compounds: cetyldimethyl betaine (this material also tempts the CTFA designation of cetylbetaine)
Cocamidopropylbetaine
where R has from about 9 to about 13 carbon atoms cocamidopropyl hydroxysultaine
where R has from about 9 to about 13 carbon atoms. Examples of other useful amphoteric surfactants are alkyliminoacetates, and iminodyalkanoates and aminoalkanoates of the formula RN [CH2) mCO2M] 2 and RNH (CH2) mCO2M where m is 1 to 4, R is an alkyl or alkenyl of Cs-C22 and M is H, alkali metal, alkaline ammonium of toric metals, or alkanolammonium. Also included are imidazolium and ammonium derivatives. Specific examples of suitable amphoteric surfactants include 3-dodecyl-aminopropionate sodium, 3-dodecylamino-propane-sulphonate sodium, N-main alkyl aspartic acids such as those produced in accordance with the teachings of U.S. Patent 2,438,091; which is here incorporated as a reference in its entirety; and the products sold under the trade name "Miranol" and described in U.S. Patent 2,528,378, which is incorporated herein by reference in its entirety. Other examples of useful amphoteric include amphoteric phosphates such as coamidopropyl PG-dimonium phosphate chloride (commercially available as Monaquat PTC, from Mona Corp.). Also useful are amphoacetates such as disodium lauroamphodiacetate, sodium lauroamfoacetate and mixtures thereof. The preferred foaming surfactants are selected from the group consisting of anionic foaming surfactants selected from the group consisting of ammonium lauroylsarcosinate, sodium trideceth sulfate, sodium lauroyl arcosinate, ammonium laureth sulfate, sodium laureth sulfate, lauryl ammonium sulfate, sodium lauryl sulfate, ammonium cocoyl isethionate, sodium cocoyl isethionate, sodium lauroyl isethionate, sodium cetyl sulfate, sodium monolauryl phosphate, sodium ether sulfonate cocglycerol, sodium Cg-C22 soap, and combinations thereof; the nonionic foaming surfactants selected from the group consisting of lauramine oxide, cocoamine oxide, decyl polyglucose, lauryl polyglucose, sucrose cocato, C12-14 glucosamides, sucrose laurate, and combinations thereof; cationic foaming surfactants selected from the group consisting of amines, quaternary amines, quaternary amines, trigrases, quaternary imidazolinium amines, and combinations thereof; amphoteric foaming surfactants selected from the group consisting of sodium lauroamphodiacetate, sodium lauroamphoacetate, cetyldimethylbetaine, cocoamidopropylbetaine, cocoamidopropylhydroxy sultaine and combinations thereof.
lll. Additional layers In a preferred embodiment, the article of the present invention comprises one or more additional capacitors (4, 6) which one skilled in the art will recognize as separate and distinct forms of the first and second layers even when they are attached to the first layer. and second layers at some point. The additional layers are suitable for improving the general grip of the side of the article closest to the hand and other means for exerting mechanical action on the surface to be cleaned. Also, the additional layers may be suitable for improving either the feeling of softness or rubbing efficiency of the side of the article that comes into contact with the area to be cleaned. In any example, these additional layers may also be referred to as consecutively numbered layers in addition to the two essential layers of the articles of the present invention, eg, third layer, fourth layer, etc.
In a preferred embodiment at least one additional layer, the third layer is located adjacent to the outer surface of the first layer such that it forms the outermost portion of the article. In this capacity, the third layer is useful to provide a suitable surface for easy fastening of the article by hand. It is therefore desired that when the third layer is located adjacent to the outer surface of the first layer, the third layer exhibits a higher coefficient of friction in wet compared to the other layers of the article. In this embodiment, the third layer preferably has a wet coefficient of friction that is greater than about 0.45, more preferably greater than about 0.55, and more preferably greater than 0.65. The coefficient of wet friction can be determined using the methods described below in the properties section. In addition, the third layer is preferably permeable to the fluid and is soft to the skin. In another embodiment, the article comprises a fourth layer which is located adjacent to the second layer where the fourth layer comprises the same or different materials of the third layer. Suitable materials useful for the additional layer include those described above for both the first and second layers. Preferably, the materials of the additional layers are selected from the group consisting of non-woven articles, woven articles, sponges, polymeric net meshes, formed films, yarns, and combinations thereof. More preferably, the additional layer is a material selected from the group consisting of nonwoven, films formed, and combinations thereof. Even more preferably, the additional layers are selected from the group consisting of cellulosic fibers, synthetic fibers, films formed, and combinations thereof. More preferably, the additional layers are selected from the group consisting of cellulose fibers, synthetic fibers and combinations thereof. In the preferred embodiments, the additional layers may be composite materials such that each of these consists of one or more folds, each fold being made therefrom or of different materials than the other folds. In a particularly preferred embodiment, the additional layers of the articles of the present invention have a thickness of at least 1 mm. In this case, the additional layers are useful to compromise the cleaning component within the article of the present invention once the pressure is applied via the agitation of the article. In this preferred embodiment, additional layers having a thickness of at least 1 mm provide structural support for the article in such a way that its original shape is maintained throughout its useful life and the layer also tends to improve the perception of softness at consumer. Materials suitable for use in additional layers having a thickness of at least 1 mm may include, but are not limited to, foam, sponge (i.e., both natural and synthetic) corrugated materials, macroscopically expanded materials, and combinations of same. When the additional layers are expanded macroscopically, they are preferably selected from the group consisting of rolled materials, unwound materials, and combinations thereof. As used herein, "macroscopically expanded" refers to networks, slats, and films which make up the surface of a three-dimensional structure formed in such a way that both surfaces thereof exhibit a deformed three-dimensional pattern with surface aberrations corresponding to the macroscopically interleaved sections of the formed structure, where the aberrations of the surface comprising the pattern are individually distinguishable from the normal eye (ie, the normal eye having a 20/20 vision) where the perpendicular distance between the observer's eye and the eye plane of the network is around 30.48 cm. As used herein, "coiled" means that the structure formed of the material exhibits a pattern comprising mainly male projections. On the other hand, "unrolling" refers when the structure formed of the material exhibits a pattern that mainly comprises networks of female capillaries. Materials suitable for use in additional layers that have a thickness of at least 1 mm include, but are not limited to, those materials are redescribed in the patent of E.U.A. No. 5,518,801, issued to Champpell et al. on May 21, 1996, which is incorporated as a reference here in its entirety. Additional materials that are suitable for use as additional layers of the present invention include cellulosic nonwoven materials described in U.S. Pat. No. 4,447,294, the films formed from the patents of E.U.A. Nos. 4,342,314 and 4,629,643. Each of the layers discussed herein comprises at least two surfaces, ie an inner surface and an outer surface, each of which may have the same or different texture and abrasion. Preferably, the articles of the present invention comprise substrates and therefore layers which are soft to the skin. However, substrates with different textures can result from the use of different combinations of materials or from the use of different manufacturing processes or a combination thereof. For example, an insoluble substrate in dual textured water can be made to provide a cleaning article with the advantage of having a more abrasive side for exfoliation and a softer, absorbent side for gentle cleaning. In addition, the separate layers of the substrate can be manufactured to have different colors, thereby assisting the user to further distinguish the surfaces. In addition, each of the article layers as well as the articles of the present invention can be made in a wide variety of shapes and contours including flat cushions, thick spikes, thin sheets, ball-shaped implements, irregularly shaped implements. The exact size of the layers will depend on the desired use and characteristics of the articles and may have an area range in area size from about 5 cm2 to about 100 cm2. The layer and forms of the article especially suitable include, but are not limited to, square, circular, rectangular, hourglass, oval shapes having an area of about 10 cm2 to about 508 cm2, preferably about 15.24 cm2 to about 304.8 cm2, and more preferably about 38.1 cm2 to about 254 cm2, and a thickness of about 0.5 mm to about 50 mm, preferably about 1 mm to about 25 mm, and more preferably from about 2 mm to about 20 mm.
Multiple Item Modality The article of the present invention may also be packaged with one or more suitable articles so that they provide separate benefits, for example, aesthetic, therapeutic, functional, or other, thus forming a suitable cleaning equipment for personal care, use of automotive care, use of domestic care, use of care for dishes, etc. The additional article of this cleaning equipment preferably comprises a water-insoluble substrate comprising at least one layer and a beneficial agent component disposed adjacent to the substrate of the additional article. In another preferred embodiment the beneficial agent component 5 can be added onto or impregnated into the substrate of the additional article. The beneficial agent component of the additional article is suitable to provide therapeutic or aesthetic benefits to the skin or hair by depositing on said surfaces various agents including, but not limited to, conditioning agents, anti acne actives, anti wrinkle actives. , anti-microbial active, anti-fungal active, anti-inflammatory active, topical anesthetic active, agents and accelerators of artificial tanning, active for sunlight filter, anti oxidants, skin exfoliating agents, and combinations thereof. The additional article of the present invention may also serve a beneficial function in addition to or in lieu of a therapeutic or aesthetic benefit. For example, the additional article can be used as a suitable drying implement for use to assist in the removal of water from the skin or hair from the completion of a shower or bath experience.
Multiple camera mode The article of the present invention may also comprise one or more cameras. Said chambers or compartments result from the connection (e.g., bonding) of the substrate layers to each other in various places to define the enclosed areas. These chambers are useful, for example, for separating various component articles from each other, for example, cleaning components containing surfactants from conditioning agents. The components of separate articles which provide therapeutic or aesthetic or cleaning benefits can be released from the chambers in a variety of ways including, but not limited to, solubilization, emulsification, mechanical transfer, perforation, breaking, compaction, squeezing of the camera or even separating a layer of substrate which comprises a portion of the chamber.
Properties of the components of the article The articles of the present invention exhibit specific physical properties as defined by the water flow rate test, the wet friction coefficient test, the foamability test, the absorption capacity test (when an aqueous gel is present) and the moisture retention methodology. It's methods are described below.
Water flow velocity test The water flow velocity test measures the permeability of water to a substrate. Without intending to be limited by theory, water permeability can be a major determinant of the longevity of the surfactant in a foamable substrate that is used in the presence of water, especially tap water. When a foaming surfactant is present, it is desirable that it foam rapidly and profusely, even when it is completely depleted at a time which is intended to be a signal to discard the substrate used. If the permeability of the water is too low, for example zero or near zero, insufficient moisture of the surfactant contained in the substrate can cause the foaming to start too slow. On the other hand, if the water permeability is too high, the surfactant can quickly exit from the substrate, and the cleaning component containing the surfactant will not last during a complete cleaning experience.
In order to measure the water flow rate, with tape or elastic bands, a substrate was fixed to the bottom of a plastic container with the following measures: 24 mm internal diameter (id) in the outlet, 145 mm in the top, id tall, 135 mm neck length, and a total volume of around 600 ml. Applying enough tension to the substrate to ensure that the substrate is completely flat, and no more. A fixed belt and a rubber band are as close as possible to the outlet of the container to maintain the flow back from the pressure of the incoming water. Next, the regulating container is placed in a leather ring over a sink. 600 ml of water was measured at room temperature in a graduated cylinder. Then, with one hand blocking the outlet of the container, it was pushed against the test substrate, quickly pouring the water into the container. Once the container was completely filled, the hand was removed and then the draining time from the water was measured so that the container would be evacuated to one tenth of a second. The time stopped when the water reached the junction of the neck and the sloping portion of the container. This procedure was repeated 5 times per test substrate and the substrate measurements in each were averaged. Substrates that exhibited longer drain times (> 10 minutes) can be evaluated by weighing the drained water over a set period of time, eg, 5 minutes, with a container full of water. The substrate is then removed from the container and the substrate is placed on the other side and re-anchored to the outlet of the container. Measuring the water flow velocity in the opposite direction (unless the substrate is the same in both directions), and the average of the results. The water flow velocity is expressed in cm3 / cm2-s in accordance with the following equation: Water flow rate = 600 grams of water) x (1 cm3 per gram) /. { (p) (1.2 cm) 2 (average time in seconds)} . The first orifice layer of the articles of the invention is characterized in that it has a water flow rate of about 0.4 cm 3 / cm 2 -s to about 20 cm 3 (cm 2 -s, more preferably about 1 cm 2 / cm 2). -s to about 5 cm3 / cm2-s, and even more preferably from about 1.5 cm3 / cm2-s to about 4 cm3 / cm2-s and more preferably from about 2 cm3 / cm2-s to about 3 cm3 / cm2- s.
Wet friction coefficient test The wet friction coefficient test simulates the humidity conditions experienced in a shower or bath while the sliding resistance is measured from material against an analogous in vitro skin under humid conditions . Without intending to be limited by theory, it is desired that the side of the substrate that moves against the skin does not exhibit a friction that is so low that it sits on the skin in a manner similar to that of a bar of soap. More than how a scourer feels. It is also desirable that a substrate does not exhibit a friction that is too strong to bind and make it difficult to move on the skin. On the other hand, the side of the substrate that is against the wash hand, in the absence of a handle or handle, should ideally exhibit a relatively high coefficient of wet friction to assist in holding the article during cleaning. The coefficient of wet friction can be measured using an Inston Model 1122 with load cell B (maximum scale of 2,000 grams) at a speed of 12.7 cm / min over an area of 12.7 cm (with 1 minute duration) of the substrate Use a low friction pulley, 3.81 cm in diameter, with a thin test rope attached at each end to a guide and load cell B to translate the vertical movement of the Instron in horizontal movement of the guide. Adhere the pulley to a very heavy base plate (eg .283 grams). Right away, lay a guide that weighs 145.5 grams and measures 9.5 cm x 5.5 cm, and has rounded edges on a skin-textured bio-skin sheet, 19.36 cm long by 13.01 cm wide and 0.5 cm thick, available in sheets from Beaulax Co., Ltd., Japan. Place a 0.5 cm thick layer of flexible polyurethane foam (open cell foam with a weight of 104 grams / m) under the bio-skin. In order to run the wet coefficient of friction test, adhere a substrate to the guide tightly by any convenient method such as rubber bands. Remove any excess substrate on the edges and wrinkles by adjusting the substrate. Initially, apply 5 ce of water to the surface of the biopiel and 2 ce to the substrate. Once the Instron device is in motion, apply an additional 10 cc of water with a syringe to the substrate. Place the guide on the biopiel and place a 2,000 gram weight and activate the Instron device. The voltage force is continuously recorded by a computer connected to the Instron network. The friction force is measured as the average tension force between 10 and 40 seconds of measurement. The coefficient of wet friction is calculated by dividing the friction force by the normal force, which is the sum of the weight of 2,000 grams and the guide, the substrate typically adding negligible additional weight. The second layer of the articles of the present invention preferably has a coefficient of wet friction of less than 0.55 and more preferably less than 0.50. Additionally, the additional layers of the present invention which are suitable for facilitating the holding of the article by hand preferably have a wet friction coefficient greater than 0.45, more preferably larger than 0.55 and more preferably larger than 0.65.
"Bag of tea" absorption capacity test The absorption capacity can be determined by a gravimetric analytical technique using deionized water as the fluid for which the absorption capacity of the polymeric gelling agent is to be calculated. A sample of the polymeric gelling agent is placed inside a tea bag, immersed in an excess of deionized water for a specific period of time, and then subjected to centrifugation for a specific period of time. The final weight ratio of polymeric gelling agent after centrifugation minus the initial weight (net fluid gain) to the initial weight determines the absorption capacity. The following procedure is conducted under standard laboratory conditions at 23 ° C and 50% relative humidity. Using a cut die of 6 cm x 23 cm, the tea bag material is cut, folded in half lengthwise and sealed along two sides with a T bar sealer to produce a tea bag box of 6 cm x 6 cm. The tea bag material used is a heat sealable material grade 1234, obtainable from C. H. Dexter, Division of the Dexter Corp., Windsor Locks) Connecticut, U.S.A., or equivalent. The lower porosity tea bag material should be used if it is required to retain fine particles or fibers of polymeric gelling agent. 0.200 grams more or less than 0.005 grams of the polymeric gelling agent are weighed on a weigh paper and transferred to the tea bag and the top (open end) of the tea bag is sealed. An empty tea bag is sealed at the top and used as a blank sample. Approximately 300 ml of deionized water is poured into a 1,000 milliliter beaker. The tea bag preform is immersed in the deionized water. The tea bag containing the polymeric gelling agent (the sample tea bag) is held horizontally to distribute the material evenly through the tea bag. The tea bag is laid on the surface of the deionized water. The tea bag is allowed to moisten, for a period of no more than 1 minute, and then it is completely immersed and soaked for 60 minutes. Approximately 2 minutes after the first sample is immersed, a second group of tea bags, prepared identically to the first group of preform and sample tea bags, is soaked and soaked for 60 minutes in the same manner as the first group. After the prescribed soaking time for each group of tea bag samples has passed, the tea samples are removed properly (using pincers) from the deionized water. The samples are then subjected to centrifugation as described below. The centrifuge used is a Delux Dynac II Centrifuge Centrifuge, Fisher Model No. 05-100-26, obtainable from Fisher Scientific Co., of Pittsburgh, PA, or equivalent. The centrifuge must be equipped with a direct reading tachometer and an electric brake. The centrifuge is further equipped with a cylindrical insert basket having an outer wall of 6.35 cm high with an outer diameter of 21.425 cm, an inner diameter of 20.155 cm and nine rows each of approximately 106 circular holes of 0.238 cm in diameter spaced equally around the circumference of the outer wall, and having a basket floor with six 0.635 cm diameter circular drainage holes equally spaced around the circumference of the basket floor at a distance of 1.27 cm from the interior surface of the outer wall to the center of the drainage holes, or an equivalent. The basket is mounted on the centrifuge as for turning, as well as for braking, in unison with the centrifuge. The sample tea bags are placed in the centrifuge basket with a folded end of the tea bag in the spin direction of the centrifuge to absorb the initial force. The tea bag preforms are placed on either side of the corresponding sample tea bags. The sample tea bag of the second group should be placed opposite to the sample tea bag of the first group; and the tea bag preform of the second group opposite the tea bag preform of the first group, to balance the centrifuge. The centrifuge is turned on and rapid advancement is allowed at a stable speed of 1, 500 rpm and a time meter is set for 3 minutes. After 3 minutes, the centrifuge switches off and the brake is applied. The first sample tea bag and the first sample tea bag preform are removed and weighed separately. The procedure is repeated for the second sample tea bag and the second tea bag preform. The absorption capacity (AC) for each of the samples is calculated as follows: AC = (sample tea bag weight after centrifugation minus weight of tea bag preform after centrifugation minus weight of gelling agent polymeric) / (dry polymeric gelling agent). The value of absorption capacity to be used in the present is the average absorption capacity of the two samples. When an aqueous gel polymeric gelling agent, which forms hydrogel, or an aqueous gelling material is used herein, it is preferred that the material be capable of absorbing at least about 40g of (deionized) water per gram of gelling agent, preferably at less 60 g / g, more preferably at least 80 g / g.
Foam capacity test The foam capacity test measures the amount of foam generated by a cleaning article under simulated bath conditions (ie, in the presence of running water). The test is run with water with a hardness of 10 grains, at a temperature of 40 ° C and a water flow rate of 3.785 L x minute. The water runs through a spray head that emits 16 individual streams of water within its diameter of 5.08 cm. Place a plastic storage box measuring 58.4 cm in length x 40.6 cm in width x 22.8 cm in height in a deep sink adjacent to the running water (eg a Rubbermaid storage box of 55.6 liters). Then raise one end of the storage box to create an angle of approximately 30 degrees, the slope running lengthwise. Trim one side of the storage box in a semicircular pattern leaving a wall height of only 10.16 cm in the center to allow easy access. Place a flexible bath mat with suction feet, eg Rubbermaid Safti-Grip Bath Mat, facing down on the bottom of the storage box. Place an article of the present invention comprising a surfactant containing the cleaning component in the center of the bath mat. If the item is of flat design, hold its guide edge upwards to allow wetting the underside. Aim the water to the article for 1-2 seconds to moisten it, and then sprinkle the water on the item as well as the mat that surrounds it to moisten the item.
Continue sprinkling the article for 5 seconds and then stop. A diversion lever is useful to maintain flow but to direct it through the head of the shower or into the drain. After the initial 1-2 seconds of wetting the article, an experimenter begins to foam with the article vigorously at an impact velocity of 2 per second, submerging the article in the water to the bottom of the mat after each impact to keep an article and mat completely wet. Each impact covers the entire distance, from end to end, of the bath mat, reaching each edge of the box. After a total elapsed time of 30 seconds (5 seconds with water spray and 25 seconds without water spray), repeat the 30 second foam cycle again. Then remove the item from the tub without squeezing and place the item in a beaker. Remove the foam filled box from the sink and pour the contents of the box through a strainer covered with cotton cheesecloth (100% cotton heavy duty cotton cheesecloth, cut to 40.6 cm by 58.4 cm). Remove all the foam and place it in a suitable beaker for foam volume measurement while a catch vessel under the strainer traps the water that is then weighed to check the water flow rate. Carefully lift the cheesecloth out of the strainer and transfer the foam to the beaker containing previously filled foam. Once all the foam is transferred to the beaker, level the foam in the beaker and measure its volume. Then, measure the weight of the foam and calculate the density of the foam using its weight and volume. Next, return the box to the sink, and repeat the steps listed above with the previously used item. The total foam volume in the two minutes of foaming is the foaming ability of the article. To ensure consistency, run a standard product at least at the beginning and end of each (daily) group of experiments. The standard product is the article of example 1. The standard product typically produces an average of 1250 ml of foam with a foam density of 0.058 g / ml. The articles of the present invention preferably produce from 500 ml to 4000 ml in 2 minutes, more preferably from 750 ml to 3000 ml and more preferably from 1000 ml to 2500 ml, of foam, based on the foam-ability test.
Moisture retention methodology As described above, the articles of the present invention are considered to be "substantially dry". As used herein, "substantially dry" means that the articles of the present invention exhibit a moisture retention of less than 0.95 g, preferably less 0.75 g, even more preferably less than 0.5 g, even more preferably less than 0.25 g, even more preferably less than 0.15 g and more preferably, less than 0.1 g. The moisture retention is indicative of the dry feeling that users perceive when touching the articles of the present invention as opposed to the feeling of "wet" towels.
In order to determine the moisture retention of the articles herein and other products based on disposable substrate, the following equipment and materials are necessary.
Next, weigh two paper towels separately and record each weight. Place a paper towel on a flat surface (for example, a laboratory table). Place the sample article on top of that towel. Place the other paper towel over the top of the sample article. Next, place the Lexan and then the 2000 g weight (s) on top of the sandwich sample article. Wait a minute. After the minute, remove the weight (s) and Lexan. Weigh the upper and lower paper towel and record the weight. Calculate the moisture retention by subtracting the weight of the initial paper towel from the final weight (after one minute) for the upper and lower paper towels. Add the differences in weight obtained for the upper and lower paper towels. Assuming multiple items are tested, average total weight differences to obtain moisture retention.
Optional components The articles of the present invention may contain a variety of other components such as are conventionally used in a given type of product provided they do not unacceptably alter the benefits of the invention. These optional components must be suitable for application to human skin and hair, that is, when they are incorporated into the article they are suitable for use in contact with human skin without undue toxicity, incompatibility, instability, allergic response, and the like, within the scope of sure judgment by the doctor or the formulator. The CTFA Cosmetic Ingredient Handbook, Second Edition (1992) describes a wide variety of non-limiting cosmetic and pharmaceutical ingredients commonly used in the skin care industry, which are suitable for use in the articles of the present invention. Examples of those kinds of ingredients include: enzymes, abrasives, skin exfoliating agents, absorbers, aesthetic components such as fragrances, pigments, colors / dyes, essential oils, skin-feeling agents, astringents, etc., (e.g. , clove oil, menthol, camphor, eucalyptus oil, eugenol, menthyl lactate, amamelis distillate), anti-acne agents (eg, resorcinol, sulfur, salicylic acid, erythromycin, zinc, etc.), anti-inflammatory agents plasta, foam anti-foaming agents, additional antimicrobial agents (eg, iodopropyl butylcarbamate), antioxidants, binders, biological additives, pH regulating agents, volumetric agents, chelating agents, chemical additives, dyes, cosmetic astringents, cosmetic biocides, denaturants, astringent drugs, external analgesics, film formers or materials, for example, polymers, to aid in the pro properties of film formation and substantivity of the composition (eg, eicosene and vinylpyrrolidone copolymer), humectants, opacifying agents, pH adjusters, propellants, reducing agents, sequestrants, skin bleaching agents (or lightening agents) (e.g. hydroquinone, kojic acid, ascorbic acid, magnesium ascorbyl phosphate, ascorbyl glucosamine), skin conditioning agents (humectants, including several and occlusives) agents for smooth and / or heal the skin) (for example panthenol and derivatives (eg, ethyl panthenol), aloe vera, pantothenic acid and its derivatives, allantoin, bisabolol, and dipotassium glycyrrhizinate), agents for the treatment of the skin, including agents to prevent, retard, suppress, and / or reverse wrinkles of the skin ( examples alpha-hydroxy acids such as lactic acid and glycolic acid and beta-hydroxy acids such as salicylic acid), thickeners, hydrocolloids, particular zeolites, and vitamins and derivatives thereof (for example tocopherol, tocopherol acetate, beta carotene, acid retinal, retinol, retinoids, retinyl palmitate, niacin, niacinamide, and the like). The articles of the present invention may include vehicle components as is known in the art. Such vehicles may include one or more compatible liquid or solid filler diluents or vehicles that are suitable for application to the skin or hair.
The articles of the present invention may optionally contain one or more of said optional components. Preferred articles optionally contain a safe and effective amount of a therapeutic benefit component comprising a therapeutic benefit agent selected from the group consisting of vitamin compounds, conditioning agents, skin treatment agents, anti-acne actives, anti-wrinkle actives, skin antiatrophy active, anti-inflammatory active, topical anesthetics, active and accelerators of artificial tanning, active antimicrobial, active antifungal, active sunscreen, antioxidants, skin exfoliating agents, and combinations thereof. As used herein, "a safe and effective amount" means an amount of a compound or component sufficient to significantly induce a positive effect or benefit, but low enough to avoid serious side effects (eg, toxicity or allergic reaction). undue), that is, to provide a reasonable ratio of benefit to risk, within the scope of safe medical judgment. The optional components useful herein may be categorized by their therapeutic or aesthetic benefit or their postulated mode of action. However, it should be understood that the optional components useful herein in some instances may provide more than one therapeutic or aesthetic benefit or operate through more than one mode of action. Therefore, the classifications herein are made for the sake of convenience and are not designed to limit the component to that particular application or applications listed. In addition, when applicable, the pharmaceutically acceptable salts of the components are useful herein.
Therapeutic benefit component In certain embodiments of the present invention, the articles may optionally comprise a therapeutic benefit component. This benefit component is disposed adjacent to the water-insoluble substrate and comprises from 10% to 1000%, more preferably from 10% to 500% and more preferably 10% to 250% by weight of the water-insoluble substrate, of a benefit agent therapeutic. Preferably, the therapeutic benefit agent is selected from the group consisting of hydrophobic conditioning agents, hydrophilic conditioning agents, structured conditioning agents, and combinations thereof.
Hydrophobic conditioning agents The articles of the present invention may comprise one or more hydrophobic conditioning agents that are useful to provide a conditioning benefit to the skin or hair during use of the article. The articles of the present invention preferably comprise from 0.5% to 1,000%, more preferably from 1% to 200%, and more preferably from 10% to 100%, by weight of the water-insoluble substrate, of a hydrophobic conditioning agent.
The hydrophobic conditioning agent may be selected from one or more hydrophobic conditioning agents such that the arithmetic mean solubility parameter of the hydrophobic conditioning agent is less than or equal to 10.5. It is recognized that it is possible, based on this mathematical definition of solubility parameters, for example, to achieve the required arithmetic mean solubility parameter in weight, ie, less than or equal to 10.5, for a hydrophobic conditioning agent comprising two or more compounds if one of the compounds has an individual solubility parameter greater than 10.5. The solubility parameters are well known for the formulation chemistry of the person skilled in the art and are routinely used as a guide to determine the compatibilities and solubilities of materials in the formulation process. The solubility parameter of a chemical compound d is defined as the square root of the cohesive energy density for that compound. Typically, a solubility parameter for a compound is calculated from tabulated values of the additive group contributions for the heat of vaporization and the molar volume of the components of that compound, using the following equation:
in which? E = = the sum of the evaporative heat of the contributions of the additive group, and? ¡m¡ = the sum of the molar volume of the contributions of the additive group. Standard tabulations of vaporization heat and molar volume of additive group contributions for a wide variety of atoms and groups of atoms are collected in Barton, A.F.M. Handbook of Solubility Parametes, CRC Press, chapter 6, table 3, pp. 64-66 (1985), which is incorporated by reference to the present in its entirety. The above solubility parameter equation is described in Fedors, R.F., "A Method for Estimating Both the Solubility Parameters and Molar Volumes of Liquids," Polvmer Engineering and Science, vol. 14, no. 2, pp. 147-154 (February 1974), which is incorporated by reference to the present in its entirety. The solubility parameters obey the law of mixtures so that the solubility parameter for a mixture of materials is given by the arithmetic mean by weight (ie the weight average) of the solubility parameters for each component of this mixture. See Handbook of Chemistry and Phvsics. 57th edition. CRC Prees, p. C-726 (1976-1977), which is incorporated by reference herein in its entirety. The formulation chemicals typically report and use solubility parameters in units of (cal / cm3) 1/2. The tabulated values of additive group contributions for heat of vaporization in the Handbook of Solubilíty Parameters are reported in units of kJ / mol. However, these tabulated values of heat of vaporization are easily converted to cal / mol using the following well-known relationships:
1 J / mol = 0.239006 cal / mol and 1000 J = 1 kJ.
See Gordon, A.J. et al., The Chemist's Companion. John Wiley & Sons, pp. 456-463, (1972), which is incorporated by reference herein in its entirety. The solubility parameters have also been tabulated for a wide variety of chemical materials. Tabulations of solubility parameters are found in the Handbook of Solubilitv Parameters cited above. Also, see "Solubility Effects In Product, Package, Penetration, And Preservation," C.D. Vaughan, Cosmetics and Toiletries, vol. 103, October 1988, pp. 47-69, which is incorporated by reference to the present in its entirety. Non-limiting examples of hydrophobic conditioning agents include those selected from the group consisting of mineral oil, petrolatum, lecithin, hydrogenated lecithin, lanolin, lanolin derivatives, branched chain hydrocarbons of C7-C40, alcoholic esters of C1-C30 of carboxylic acids of C1 -C30, alcohol esters of C1-C30 of C2-C30 dicarboxylic acids, monoglycerides of C1-C30 carboxylic acids, diglycerides of C1-C30 carboxylic acids, triglycerides of C1-C30 carboxylic acids, ethylene glycol monoesters of carboxylic acids of C1-C30, ethylene glycolic diesters of C 1 -C 30 carboxylic acids, propylene glycol monoesters of C 1 -C 30 carboxylic acids, propylene glycol diesters of C 1 -C 30 carboxylic acids, monoesters and sugar polyesters of C 1 -C 30 carboxylic acids, polydialkylsiloxanes, polydiarylsiloxanes , polyalkarylsiloxanes, cyclomethicones having 3 to 9 silicon atoms, vegetable oils, hydrogenated vegetable oils, alkyl ethers of C4-C20 of polypropylene glycol, dialkyl ethers of C8-C30, and mixtures thereof. Mineral oil, which is also known as liquid petrolatum, is a mixture of liquid hydrocarbons obtained from petroleum. See The Merck Index, Tenth Edition, Entry 7048, p. 1033 (1983) and International Cosmetic Ingredient Dictionary, Fifth Edition, vol. 1, p. 415-417 (1993), which is incorporated by reference herein in its entirety. Petrolatum, which is also known as petrolatum jelly, is a colloidal system of solid non-straight-chain hydrocarbons and high-boiling liquid hydrocarbons, in which most liquid hydrocarbons are contained within micelles. See The Merck Index, Tenth Edition, Entry 7048, p. 1033 (1983); Schindier, Drug. Cosmet. Ind., 89. 36-37. 76. 78-80, 82 (1961); and International Cosmetic Ingredient Dictionary, Fifth Edition, vol. 1 p. 537 (1993), which is incorporated herein by reference in its entirety. Lecithin is also useful as a hydrophobic conditioning agent. It is a mixture that occurs naturally from the diglycerides of certain fatty acids, chained to the choline ester of phosphoric acid.
Straight or branched chain hydrocarbons having from 7 to 40 carbon atoms are useful herein. Non-limiting examples of those hydrocarbon materials include dodecane, isododecane, squalene, cholesterol, hydrogenated polyisobutylene, docosane (ie, a C4 hydrocarbon), hexadecane, isohexadecane (a commercially available hydrocarbon sold as Permethil® 101A by Presperse, South Plainfield , NJ). Also useful are C7-C40 isoparaffins which are branched C7-C40 hydrocarbons. Polydecene, a branched liquid hydrocarbon, is also useful herein and is commercially available under the tradenames Puresin 100® and Puresin 300® from Mobile Chemical (Edison, Nj). Also useful are C 1 -C 30 alcohol esters of C 1 -C 30 carboxylic acids and C 2 -C 30 dicarboxylic acids, including straight and branched chain materials as well as aromatic derivatives. Also useful are esters such as monoglycerides of C 1 -C 30 carboxylic acids, C 1 -C 30 carboxylic acid diglycerides, C 1 -C 30 carboxylic acid triglycerides, ethylene glycol monoesters of C 1 -C 30 carboxylic acids, ethylene glycol diesters of carboxylic acids of C1-C30, propylene glycol monoesters of carboxylic acids of C1-C30, and propylene glycol thiols of carboxylic acids of C1-C30. The straight chain, branched chain and aryl carboxylic acids are included herein. The propoxylated and ethoxylated derivatives of these materials are also useful. Non-limiting examples include thiisopropyl sebacate, diisopropyl adipate, isopropyl myristate, isopropyl palmitate, myristyl propionate, ethylene glycol distearate, 2-ethylhexyl palmitate, isodecyl neopentanoate, di-2-ethylhexyl maleate, palmitate cetyl, myristyl myristate, stearyl stearate, cetyl stearate, behenyl behenate, diotyl maleate, dioctyl sebacate, diisopropyl adipate, cetyl octonoate, diisopropyl dillnoalleate, caprylic / capric triglyceride, PEG-6 triglyceride caprylic / capric, caprylic / capric PEG-8 triglyceride, and combinations thereof. Also useful are various C1-C30 monoesters and polyesters of sugars and related materials. These esters are derived from a sugar or polyol portion and one or more carboxylic acid moieties. Depending on the acid and constituent sugar, these esters may be in liquid or solid form at room temperature. Examples of liquid esters include: glucose tetraoleate, glucose tetraesters of soybean oil fatty acids (unsaturated), mixed soybean oil fatty acid tetraesters, galactose tetraesters of oleic acid, arabinose tetraesters of linoleic acid, xylose tratralinoleate, galactose pentaoleate, sorbitol tetraoleate, sorbitol hexaesters of unsaturated soybean oil fatty acids, xylitol pentaoleate, sucrose tetraoleate, sucrose pentaoleate, sucrose hexaoleate, sucrose heptaoleate, sucrose octaoleate, and mixtures thereof. Examples of solid esters include: sorbitol hexaester in which the carboxylic acid ester moieties are palmitoleate and arachididate in a molar ratio of 1: 2, the raffinose octaester in which the carboxylic acid ester moieties are linoleate and behenate in a molar ratio of 1: 3; the maltose heptaester in which the esterifying carboxylic acid moieties are sunflower seed oil fatty acids and lignoserate in a molar ratio of 3: 4; the octaester of sucrose in which the esterifying portions of carboxylic acid are oleate and behenate in a molar ratio of 2: 6; and the octaester of sucrose in which the esterifying carboxylic acid moieties are laurate, linoleate and behenate in a molar ratio of 1: 3: 4. A preferred solid material is sucrose polyester in which the degree of esterification is 7-8., and in which the fatty acid portions are mono- and / or di-unsaturated C18 and behenic, in a molar ratio of unsaturated: behenic from 1: 7 to 3: 5. A particularly preferred solid sugar polyester is the octaester of sucrose in which there are approximately 7 portions of behenic fatty acid and a portion of oleic acid in the molecule. Other materials include sucrose esters of fatty acid from cottonseed oil or soybean oil. Ester materials are further described in the U.S.A. No. 2,831,854, patent of E.U.A. No. 4,005,196, to Jandacek issued on January 25, 1977; patent of E.U.A. No. 4,005,195 to Jandacek issued on January 25, 1977; patent of E.U.A. No. 5,306,516 to Letton et al., Issued April 26, 1994; patent of E.U.A. No. 5,306,515 to Letton et al., Issued April 26, 1994, patent of E.U.A. No. 5,305,514 to Letton et al., Issued April 26, 1994; patent of E.U.A. No. 4,797,300, to Jandacek et al., Issued January 10, 1989; patent of E.U.A. No. 3,963,699, to Rizzi et al., Issued June 15, 1976; patent of E.U.A. No. 4,518,772, to Volpenhein, issued May 21, 1985; and patent of E.U.A. No. 4,517,360 to Volpenhein, issued May 21, 1985; each of which is incorporated by reference to the present in its entirety.
Non-volatile silicones such as polydialkylsiloxane, polyarylsiloxanes, and polyalkarylsiloxanes are also useful oils. These silicones are described in the patent of E.U.A. No. 5,069,897, to Orr, issued December 3, 1991, which is incorporated by reference herein in its entirety. The polyalkysiloxanes correspond to the general chemical formula R3S0O [R2SiO] xSiR3 in which R is an alkyl group (preferably R is methyl or ethyl, more preferably methyl) and x is an integer of up to 500, selected to achieve the desired molecular weight . Commercially available polyalkylsiloxanes include the polydimethylsiloxanes, which are also known as dimethicones, non-limiting examples of which include the Vicasil® series sold by the General Electric Company and the Dow Corning® 200 series sold by Dow Corning Corporation. Specific examples of polydimethylsiloxanes useful herein include Dow Corning® 225 fluid having a viscosity of 10 centistokes and a boiling point greater than 200 ° C, and Dow Corning® 200 fluids having viscosities of 50, 350, and 12,500 centistokes , respectively, and boiling points larger than 200 ° C. Also useful are materials such as trimethylsiloxysilicate, which is a polymeric material corresponding to the general chemical formula [(CH2) 3S0O? / 2]? [S0O2] y, in which x is an integer of 1 at 500 ey is an integer from 1 to 500. A commercially available trimethylsiloxysilicate is sold as a mixture with dimethicone as Dow Corning® 593 fluid. Dimethicolones, which are hydroxy-terminated dimethyl silicones, are also useful herein. These materials can be represented by the general chemical formulas R3SiO [R2SiO] xSiR2OH and HOR2SiO [R2SiO] xSiR2OH in which R is an alkyl group (preferably R is methyl or ethyl, more preferably methyl) and x is an integer of up to 500, selected to achieve the desired molecular weight. Commercially available dimethicolones are typically sold as mixtures with dimethicone or cyclomethicone (e.g. Dow Coming® 1401, 1402 and 1403 fluids). Also useful herein are polyalkylalcaryl siloxanes, with polymethylphenyl siloxanes having viscosities of 15 to 65 centistokes at 25 ° C being preferred. These materials are available, for example, as SF 1075 methylphenyl fluid (sold by General Electric Company) and phenyl trimeficone 556 Cosmetic Grade fluid (sold by Dow Corning Corporation). Alkylated silicones such as methyldecyl siiicone and methyloctyl sílicon are useful herein and are commercially available from General Electric Company. Alkylated siloxanes such as alkyl methicones and alkyl dimethicones in which the alkyl chain contains from 10 to 50 carbons are also useful herein. Said siloxanes are commercially available under the trade names ABIL WAX 9810 (C2-C28 alkyl methicone) (sold by Goldschmidt) and SF1632 (cetearyl methicone) (sold by General Electric Company). Vegetable oils and hydrogenated vegetable oils are also useful herein. Examples of vegetable oils and hydrogenated vegetable oils include safflower oil, castor oil, coconut oil, cottonseed oil, shad oil, palm kernel oil, palm oil, peanut oil, soybean oil, oil of colasa seed, flax seed oil, rice bran oil, pine oil, sesame oil, sunflower seed oil, hydrogenated safflower oil, hydrogenated castor oil, hydrogenated coconut oil, seed oil hydrogenated cotton, hydrogenated shad oil, hydrogenated palm kernel oil, hydrogenated palm oil, hydrogenated peanut oil, hydrogenated soybean oil, hydrogenated coiase seed oil, hydrogenated flax seed oil, hydrogenated rice bran oil, hydrogenated sesame oil, hydrogenated sunflower seed oil, and mixtures thereof. Also useful are the alkyl ethers of C4-C20 of polypropylene glycols, the carboxylic acid esters of C1-C20 of polypropylene glycols, and the dialkyl esters of C8-C30. Non-limiting examples of these materials include butyl ether of PPG-14, stearyl ether of PPG-15, dioctyl ether, octyldodecyl ether, and mixtures thereof. Hydrophobic chelating agents are also useful herein as hydrophobic conditioning agents. Suitable agents are described in the US patent. No. 4,387,244 to Scanlon et al. on June 7, 1983 and the co-pending patent application of E.U.A. Nos. 09 / 258,747 and 09 / 259,485, presented to the names of Schwartz et al. on February 26, 1999.
Hydrophilic Conditioning Agents The articles of the present invention may optionally comprise one or more hydrophilic conditioning agents. Non-limiting examples of hydrophilic conditioning agents include those selected from the grconsisting of polyhydric alcohols, polypropylene glycols, polyketylene glycols, ureas, pyrroxydoncarboxylic acids, ethoxylated and / or propoxylated C3-C6 triols and triols, C2-C6 alpha hydroxycarboxylic acids, ethoxylated sugars and / or propoxylates, polyacrylic acid copolymers, sugars having up to 12 carbon atoms, sugar alcohols having up to 12 carbon atoms, and mixtures thereof. Specific examples of useful hydrophilic conditioning agents include materials such as urea, guanidine; glycolic acid and glycolate salts (for example ammonium and quaternary alkylammonium); lactic acid and lactate salts (for example ammonium and dialkylammonium quaternary); sucrose, fructose, glucose, erutrosa, erythritol, sorbitol, mannitol, glycerol, hexanetriol, propylene glycol, butylene glycol, hexylene glycol, and the like; polyethylene glycols such as PEG-2, PEG-3, PEG-30, PEG-50, polypropylene glycols such as PPG-9, PPG-12, PPG-15,, PPG-17, PPG-20, PPG-26, PPG-30 , PPG-34; alkoxylated glucose; hyaluronic acid; cationic skin conditioning polymers (for example quaternary ammonium polymers such as polyquaternium polymers); and mixtures thereof. Glycerol, in particular, is a preferred hydrophilic conditioning agent in the articles of the present invention. Also useful are materials such as aloe vera in any of its variety of forms (for example aloe vera gel), cytosans and cytosan derivatives, for example cytosan lactate, lactate monoethanolamide; acetamide monoethanolamine; and mixtures thereof. Propoxylated glycerols are also useful as described in propoxylated glycerols which are described in the U.S. patent. No. 4,976,953 to Orr et al., Issued December 11, 1990 which is incorporated herein by reference in its entirety. The therapeutic benefit component can be elaborated in a variety of ways. In one embodiment of the present invention, the therapeutic benefit component is in the form of an emulsion. For example, emulsions of oil in water, water in oil, water in oil in water, and oil in water in silicone are useful herein. As used in the context of emulsions, "water" can refer not only to water but also to water soluble agents or mixtures in water such as glycerin. Preferred therapeutic benefit components comprise an emulsion, which additionally comprises an aqueous phase and an oil phase. As will be understood by the person skilled in the art, a given component will be distributed mainly in the aqueous or oil phase, depending on the solubility / dispersibility in water of the therapeutic benefit agent in the component. In one embodiment, the oil phase comprises one or more hydrophobic conditioning agents. In another embodiment, the aqueous phase comprises one or more hydrophilic conditioning agents. The therapeutic benefit components of the present invention, which are in the form of an emulsion, generally contain an aqueous phase and an oil or lipid phase. Suitable oils or lipids may be derived from animals, plants, or petroleum and may be natural or synthetic (ie, made by man). Said oils are discussed above in the section on hydrophobic conditioning agents. Suitable aqueous phase components include the hydrophilic conditioning agents, which are discussed above. Preferred emulsion forms include water-in-oil emulsions, water-in-silicone emulsions, and other inverse emulsions. Additionally, the preferred emulsions also contain a hydrophilic conditioning agent such as glycerin so that an emulsion of glycerin in oil results. The therapeutic benefit components in the form of an emulsion will additionally preferably contain from 1% to 10%, more preferably 2% to 5%, of an emulsifier, based on the weight of the therapeutic benefit component. The emulsifiers can be nonionic, anionic or cationic. Suitable emulsifiers are described, for example, in the patent of E.U.A. 3,755,560, issued August 28, 1973, Dickert et al .: patent of E.U.A. 4,426,769, issued December 20, 1983, Dixon et al.; and McCutcheon's Detergents and Emulsifiers, North American Edition, pages 317-324 (1986). The therapeutic benefit components in the form of emulsion may also contain a foam anti-foaming agent to minimize foaming with application to the skin. Foaming anti-foaming agents include high molecular weight silicones and other materials well known in the art for such use.
The therapeutic benefit component may also be in the form of a microemulsion. As used herein, "microemulsion" refers to stable thermodynamic mixtures of two immiscible solvents (one apolar and the other polar) stabilized by an amphiphilic molecule, a surfactant. Preferred microemulsions include water-in-oil microemulsions.
Structured conditioning agents The therapeutic benefit component may comprise structured conditioning agents. Suitable structured conditioning agents include, but are not limited to, vesicular structures such as ceramides, liposomes, and the like. In another embodiment, the therapeutic benefit agents of the benefit component are comprised within a composition in the form of a coacervate. Preferably, the coacervate-forming composition comprises a cationic polymer, an anionic surfactant, and a dermatologically acceptable carrier for the polymer and the surfactant. The cationic polymer can be selected from the group consisting of quaternary ammonium polymers of natural base structure, quaternary ammonium polymers of synthetic base structure, amphoteric type polymers of natural base structure, amphoteric type polymers of synthetic base structure, and combinations thereof.
More preferably, the cationic polymer is selected from the group consisting of quaternary ammonium polymers of natural base structure selected from the group consisting of Polyquatemium-4, polyquaternium-10, polyquaternium-24, chlorides of alkyldimonium PG-hydroxyethylcellulose, hydroxypropyltrimonium chloride of guar, hydroxypropyltrimonium chloride of hydroxypropylguar and combinations thereof; Synthetic structure quaternary ammonium polymers selected from the group consisting of polyquatemium-2, polyquatemium-6, polyquatemium-7, polyquaternium-11, polyquatemium-16, polyquatemium-17, polyquatemium-18, polyquaternium-28, polyquaternium-32, polyquaternium- 37, polyquaternium-43, polyquatemium-44, polyquatemium-46, polymethacrylamidopropyltrimonium chloride, acrylamidopropyltrimonium chloride / acrylamide copolymer, and combinations thereof; amphoteric type polymers of natural base structure selected from the group consisting of cytosans, quaternized proteins, hydrolyzed proteins, and combinations thereof; amphoteric type polymers of synthetic base structure selected from the group consisting of polyquatemium-22, polyquatemium-39, polyquatemium-47, copolymers of adipic acid / dimethylaminohydroxypropyldiethyltriamine, copolymer of polyvinylpyrrolidone / dimethylaminoethylmethacrylate, copolymer of vinylcaprolactam / polyvinylpyrrolidone / dimethylaminoethyl methacrylate, terpolymer of vinylcaprolactam / polyvinylpyrrolidone / dimethylaminopropylmethacrylamide, polyvinylpyrrolidone / dimethylaminopropylmethacrylamide copolymer, polyamine and combinations thereof; and combinations thereof. Even more preferably, the cationic polymer is an amphoteric type polymer of synthetic base structure. Even more preferably, the cationic polymer is a polyamine. When the cationic polymer is a polyamine, it is preferred that the cationic polyamine polymer be selected from the group consisting of polyethylene imines, polyvinylamines, polypropylene imines, polylysines and combinations thereof. Even more preferably, the cationic polyamine polymer is a polyethylene imine. In certain embodiments in which the cationic polymer is a polyamine, the polyamine may be hydrophobically modified. In this case, the cationic polyamine polymer is selected from the group consisting of benzylated polyamines, ethoxylated polyamines, propoxylated polyamines, alkylated polyamines, amidated polyamines, esterified polyamines and combinations thereof. The coacervate formation composition comprises 0.01% to 20%, more preferably from 0.05% to 10%, and more preferably from 0.1% to 5%, by weight of the coacervate-forming composition, of the cationic polymer. Suitable anionic surfactants include those discussed above as they relate to the "cleaning component." Preferably, for the coacervate-forming composition, the anionic surfactant is selected from the group consisting of sarcosinates, glutamates, sodium alkyl sulfates, ammonium alkyl sulfates, sodium alkylene sulphates, ammonium alkylene sulphates, ammonium laureth-sulfates, lauret-n Sodium sulfates, isethionates, ether glycerol sulfosuccinates and combinations thereof. More preferably, the anionic surfactant is selected from the group consisting of sodium lauroyl sarcosinate, monosodium lauroylglutamate, sodium alkyl sulfates, ammonium alkyl sulphates, sodium alkyleth sulfates, ammonium alkylether sulphates, and combinations thereof. Suitable coacervate forming compositions are further described in the patent applications of E.U.A. copendientes series 09 / 397,747, presented in the name of Schwartz et al.; 09 / 397,746, filed in the name of Heinrich et al .; 09 / 397,712, filed in the name of Schwartz et al .; 09 / 397,723, filed in the name of Heinrich et al .; and 09 / 397,722, filed in the name of Venkitaraman et al .; each of which were presented on September 16, 1999. Alternatively, the coacervate-forming composition may comprise an anionic polymer, a cationic surfactant, and a dermatologically acceptable carrier for the polymer and the surfactant. The anionic polymer can be selected from the group consisting of polyacrylic acid polymers, polyacrylamide polymers, acrylic acid copolymers, acrylamide and other natural or synthetic polymers, (eg, polystyrene, polybutene, polyurethane, etc.), naturally occurring derivatives , and combinations thereof. Suitable gums include alginates (e.g., propylene glycol alginate), pectins, cytosans (e.g., cytosan lactate, and modified gums (e.g., starch octenyl succinate), and combinations thereof. More preferably, the anionic polymer is selected from the group consisting of polyacrylic acid polymers, polyacrylamide polymers, pectins, cytosans, and combinations thereof Preferred articles of the present invention comprise from 0.01% to 20%, more preferably from 0.05% to 10%, and more preferably from 0.1% to 5%, by weight of the coacervate forming composition, of the anionic polymer Cationic surfactants include, but are not limited to, those discussed herein.The therapeutic benefit component of the article is suitable to provide therapeutic or aesthetic benefits to the skin or hair by deposition on said surfaces of not only conditioning agents ionators but also several agents including, but not limited to, anti-acne active, anti-wrinkle active, antimicrobial active, antifungal active, anti-inflammatory active, topical anesthetic active, agents and accelerators for artificial tanning, antiviral agents, enzymes, sunscreen actives, antioxidants, agents for exfoliating the skin, and combinations thereof. It should also be understood that the therapeutic benefit component may be contained within the cleaning component of the present invention or vice versa such that they form a unitary component with non-distinguishable ingredients.
Vitamin Compounds The articles herein may comprise vitamin compounds, precursors and derivatives thereof. These vitamin compounds can be in natural or synthetic form. Suitable vitamin compounds include but are not limited to, Vitamin A (eg, beta-carotene, retinoic acid, retinol, retinoids, retinyl-retinyl-propylate palmitate, etc.), Vitamin B (eg, niacin, niacinamide, riboflavin, pantothenic acid, etc.), Vitamin C (for example, ascorbic acid, etc.), Vitamin D (for example, ergosterol, ergocalciferol, cholecalciferol, etc.), Vitamin E (for example, tocopheryl acetate, etc.), and Vitamin K (for example, phytonadione, menadione, phthiocol, etc.). In particular, the articles of the present invention may comprise a safe and effective amount of a vitamin B3 compound. The Vitamin B3 compounds are particularly useful for regulating the condition of the skin as described in the patent application of E.U.A. co-pending series 08 / 834,010, filed on April 11, 1997 (corresponding to the international publication WO 97/39733 A1, published October 30, 1997), which is incorporated by reference herein in its entirety. The therapeutic component of the present invention preferably comprises from 0.01% to 50%, more preferably from 0.1% to 10%, still more preferably from 0.5% to 10%, and even more preferably from 1% to 5%, more preferably from 2 % to 5% of the vitamin B3 compound. As used herein, "vitamin B3 compound" means a compound having the formula:
wherein R is -CONH2 (ie, niacinamide), -COOH (ie, nicotinic acid) or CH2OH (i.e., nicotinyl alcohol); derived from them; and salts of any of those mentioned above. Exemplary derivatives of the above vitamin B3 compounds include nicotinic acid esters, including nicotinic acid non-vasodilating esters, nicotinyl amino acids, nicotinyl alcohol esters of carboxylic acids, nicotinic acid N-oxide and niacinamide N-oxide. Examples of suitable vitamin B3 compounds are well known in the art and are commercially available from a number of sources, for example The Sigma Chemical Company (St. Louis, MO); ICN Biomedicals, Inc. (Irvin, CA) and Aldrich Chemical Company (Milwaukee, Wl). The vitamin compounds can be included as the substantially pure material, or as an extract obtained by suitable physical and / or chemical isolation from natural sources (eg plants).
Agents for treating the skin The articles of the present invention may contain one or more agents for treating the skin. Suitable skin treating agents include those effective to prevent, retard, limit and / or reverse wrinkles of the skin. Examples of suitable skin treatment agents include, but are not limited to, alpha hydroxy acids such as lactic acid and glycolic acid and beta hydroxy acids such as salicylic acid.
Anti-acne Active Examples of anti-acne active ingredients useful in articles of the present invention include keratolytics such as salicylic acid (o-hydroxybenzoic acid), salicylic acid derivatives such as 5-octanoyl salicylic acid, and resorcinol; retinoids such as retinoic acid and its derivatives (for example cis and trans); amino acids D and L containing sulfur and its derivatives and salts, particularly its N-acetyl derivatives, a preferred example of which is N-acetyl-L-cysteine; lipoic acid; antibiotics and antimicrobials such as benzoyl peroxide, octopirox, tetracycline, ether 2,4,4'-trochloro-2'-hydroxy diphenyl, 3,4,4'-trichlorobanalide, azelaic acid and its derivatives, phenoxyethanol, phenoxypropanol, phenoxyisopropaol, ethyl acetate, clindamycin and meclocycline; sebostats such as flavonoids; and bile salts such as simmol sulfate and its derivatives, deoxycholate, and cholate.
Anti-wrinkle and anti-antria skin actives Examples of anti-wrinkle and anti-skin-healthy active ingredients useful in the articles of the present invention include retinoic acid and its derivatives (for example cis and trans); retinol; retinyl esters; niacinamide, salicylic acid and derivatives thereof; amino acids D and L which contain sulfur and its derivatives and salts, particularly the N-acetyl derivatives, a preferred example of which is N-acetyl-L-cysteine; thiols, for example, ethane thiol; hydroxy acid, phytic acid, lipoic acid; lysophosphatidic acid, and skin release agents (for example phenol and the like).
Non-steroidal anti-inflammatory actives (NSAIDS) Examples of NSAIDS useful in the articles of the present invention include the following categories: propionic acid derivatives; acetic acid derivatives; Fungal acid derivatives; biphenylcarboxylic acid derivatives; and oxicamas. All of these NSAIDS are fully described in the US patent. 4,985,459 to Sunshine et al., Issued January 15,
1991, incorporated herein by reference in its entirety. Examples of
Useful NSAIDS include acetylsalicylic acid, ibuprofen, naproxen, benoxaprofen flurbiprofen, fenoprofen, fenbufen, ketoprene, indoprofen, pirprofen, carprofen, oxaprozin, pranoprofen, miroprofen, thioxaprofen, suprofen, alminoprofen, tiarophenic acid, fluprofen and bucilloxic acid.
Steroidal antiinflammatory drugs including hydrocortisone and the like are also useful.
Topical Anesthetics Examples of topical anesthetic drugs useful in the articles of the present invention include benzocaine, lidocaine, bupivavaine, chlorprocaine, di-bucaine, etidocaine, mepivacaine, tetracaine, dicllonine, hexylcaine, procaine, cocaine, zetamine, ramoxin, phenol, and pharmaceutically acceptable salts thereof.
Active agents and accelerators for artificial tanning Examples of active ingredients and accelerators for artificial tanning useful in the articles of the present invention include dihydroxy acetazone, pyrosine, tyrosine esters such as ethyl tyrosinate, and phospho-DOPA.
Antimicrobial and antifungal active substances Examples of antimicrobial and antifungal active ingredients useful in the articles of the present invention include β-lactam drugs, quinolone drugs, ciprofloxacin, norfloxacin, tetracycline, erythromycin, amicasin, 2,4,4'-trichloroether 2'-hydroxy diphenyl, 3,4,4'-trichlorocarbanilide, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, doxycycline, capreomycin, chlorhexidine, chlortetracycline, oxytetracycline, clindamisin, ethambutol, hexamidine isethoate, metronidazole, pentamidine, gentamicin, kanamycin kanamycin, lineomycin metacycline, methenamine, minocycline, neomycin, netilmicin, paromomycin, streptomycin, tombramycin, miconazole, tetracycline hydrochloride, erythromycin, zinc erythromycin, erythromycin estolate, erythromycin stearate, amytosin sulfate, doxycycline hydrochloride, capriomisin sulfate, gluconate of chlorhexidine, chlorhexidine hydrochloride, chlorhexidine hydrochloride, clo chlortetracyclic hydrochloride, oxytetracycline hydrochloride, clindamycin hydrochloride, ethambutol hydrochloride, metronidazole hydrochloride, pentamidine hydrochloride, gentamicin sulfate; cannamisin sulfate, lineomycin hydrochloride, methacycline hydrochloride, methenamine hippurate, methenamine mandelate, minocycline hydrochloride, neomycin sulfate, netilmicin sulfate, paromomycin sulfate, estropmacin sulfate, miconasol hydrochloride, amafandine hydrochloride, sulfate amafandin, octopirox, parachloromethalexinol, nystatin, tolnaftate, pyrithione and zinc clotrimazole.
Antiviral Agents The articles of the present invention may further comprise one or more antiviral agents. Suitable antiviral agents include, but are not limited to, metal salts (e.g., silver nitrate, copper sulfate, iron chloride, etc.) and organic acids (e.g. malic acid, salicylic acid, benzoic acid, succinic acid, etc.). In particular, compositions containing additional suitable antiviral agents include those described in the patent applications of E.U.A. copendientes Series Nos. 09/421, 084 (Beerse et al.); 09/421, 131 (Biedermann et al.); 09 / 420,646 (Morgan et al.); and 09/421, 179 (Page et al.); which were each presented on October 19, 1999.
Enzymes The article of the present invention may optionally include one or more enzymes. Preferably, said enzymes are dermatologically acceptable. Suitable enzymes include, but are not limited to, keratinase, protease, amylase, subtilisin, etc.
Assets of sunscreen. Sunscreen assets are also useful herein. A wide variety of sunscreen agents are described in the U.S.A. No. 5,087,445, to Haffey et al., Issued February 11, 1992; patent of E.U.A. No. 5,073,372, to Turner et al, issued December 17, 1991; patent of E.U.A. No. 5,073,371, to Tumer et al, issued December 17, 1991; and Segarin, et al., in Chapter VIII, pages 189 et seq., of Cosmetics Science and Technology, all of which are incorporated herein by reference in their entirety. Non-limiting examples of sunscreens that are useful in the compositions of the present invention are those selected from the group consisting of 2-ethylhexyl p-methoxycinnamate, 2-ethylhexyl N, N-dimethyl-p-aminobenzoate, p-aminobenzoic acid, -phenylbenzimidazole-5-sulfonic acid, octrocrylene, oxybenzone, homomenthyl salicylate, octyl salicylate, 4,4'-methoxy-t-butyldibenzoylmethane, 4-isopropril dibenzoylmethane, 3-benzylidenecamphor, 3- (4-methylbenzylidene) camphor, dioxide of titanium, zinc oxide, silica, iron oxide, and mixtures thereof. Still other useful sunscreens are those described in the U.S. patent. No. 4,937,370, to Sabatelli, issued June 26, 1990; and patent of E.U.A. No. 4,999,186, to Sebatelli et al, issued March 12, 1991; These two references are incorporated herein by reference in their entirety. Particularly preferred examples of these sunscreens include those selected from the group consisting of 4-N, N- (2-ethylhexyl) methylaminobenzoic acid ester of 2,4-dihydroxybenzophenone, 4-N, N-acid ester - (2-ethylhexyl) methylaminobenzoic acid with 4-hydroxydibenzoylmethane, 4-N, N- (2-ethylhexyl) -methalamide-benzoic acid ester of 2-hydroxy-4- (2-hydroxyethoxy) benzophenone, ester of 4- (2-hydroxyethoxy) dibenzoylmethane 4-N, N- (2-ethylhexyl) -methylaminobenzoic acid and mixtures thereof. The exact amounts of sunscreens that can be used will vary depending on the sunscreen selected and the desired sun protection factor (SPF) that will be achieved. The SPF is a measure that is commonly used for photo-protection of a solar filter against erisema. See Federal Register, Vol 43, No. 166, pp. 38206-38269, of August 25, 1978 which is incorporated herein by reference in its entirety.
Hydrocolloids Hydrocoiodes may also be optionally included in the articles of the present invention. Hydrocolloids are well known in the art and are useful for extending the useful life of the surfactants obtained in the cleaning component of the present invention so that the articles can last through at least a whole shower or bath experience. Suitable hydrocolloids include, but are not limited to, xanthan gum, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methyl and ethylcellulose, natural gums, guar gum, bean gum, natural starches, deionized starches (e.g. octenyl succinate starch) and Similar.
Exothermic Zeolites Zeolites and other components that react exotherm when combined with water may also optionally include the articles of the present invention.
Hydrogel-forming polymeric gelling agents The articles of the present invention may optionally comprise an aqueous gel, ie, a "hydrogel" formed from a polymeric gelling agent for hydrogel and water formation. When an aqueous gel is present, the articles preferably comprise from 0.1% to 100% by weight of the water insoluble substrate, more preferably from 3% to 50%, and more preferably from 5% to 35% of a hydrogel-forming polymeric gelling agent, calculated on the basis of the dry weight of the hydrogel-forming polymeric gelifying agent. In general, the hydrogel-forming polymeric gelling agent materials of the present invention are at least partially entangled polymers prepared from polymerizable unsaturated monomers containing acids which are soluble in water or become soluble in water upon hydrolysis. These include monoethylenically unsaturated compounds having at least one hydrophilic radical, including (but not limited to) olefinically unsaturated acids and anhydrides conferring at least one olefinic carbon-carbon double bond. With respect to these monomers, water-soluble means that the monomer is soluble in deionized water at 25 ° C at a level of at least 0.2%, preferably at least 1.0%. With the polymerization, the monomer units as described above will generally be from 25 mole percent to 99.9 mole percent, more preferably from 50 mole percent to 99.99 mole percent, more preferably at least 75 mole percent of the gelling agent material polymeric (based on dry polymer weight) of monomers that confer acid. The hydrogel forming polymeric gelation agent is partially entangled to a sufficient degree so that it is preferably sufficiently high so that the resulting polymer does not exhibit a glass transition temperature (Tg) below 140 ° C and in accordance with this, the term "hydrogel formation polymeric gelling agent" as used herein, should mean polymers that meet this parameter. Preferably, the polymeric hydrogel forming agent does not have a Tg below 180 ° C and more preferably does not have a Tg before decomposition of the polymer, at temperatures of 300 ° C or higher. The Tg can be determined by differential evaluation calorimetry (DSC) conducted at a heating rate of 20.0 ° C / minute with samples of 5 mg or smaller. The Tg is calculated as the midpoint between the start and end of the heat flux change that corresponds to the glass transition over the DSC heating capacity in the heating curve. The use of DSC to determine Tg is well known in the art, and is described by B. Cassel and MP DiVito in "Use of DSC to Obtain Accurate Thermodynamic and Kinetic Data", American Laboratory, January 1994, pp. 14-19 and by B. Wunderlich in Thermal Analysis, Academ Press, Inc., 1990. The polymeric hydrogel formation material is characterized as highly absorbent and capable of retaining water in its absorbed or "gel" state. The preferred hydrogel-forming polymeric gelling agents will have to absorb at least 40 g of water (deionized) per gram of gelling agent, preferably at least 60 g / g, more preferably at least 80 g / g. These values, referred to as "absorbency capacity" herein may be determined according to the procedure in the "bag of tea" absorbency test described above. The polymeric gelling agent for hydrogel formation will, in general, be at least partially interlaced. Suitable inter-linking agents are well known in the art and include, for example, (1) compounds that have at least two polymerizable double bonds; (2) compounds having at least one polymerizable double bond and at least one functional group reactive with the acid-containing monomer material; (3) compounds having at least two functional groups reactive with the acid-confining monomer material; and (4) polyvalent metal compounds that can form ionic inter-linkages. Interlinking agents having at least two polymerizable double bonds include (i) di- or polyvinyl compounds such as divinylbenzene and divinyl toluene; (ii) di- or polyesters of unsaturated mono- or polycarboxylic acids with polyols including, for example, di- or triaccyclic acid esters of polyols such as ethylene glycol, trimethylolpropane, glycerin, or polyoxyethylene glycols; (ii) bisacrylamides such as N, N-methylenebisacrylamide; (iv) Carbamyl esters which can be obtained by reacting polyisocyanates with monomers containing hydroxyl group; (v) di- or polyallyl ethers of polyols; (vi) di- or polyallyl esters of polycarboxylic acids such as diallyl phthalate, diallyl adipate, and the like; (vii) esters of unsaturated mono- or poly-carboxylic acids with monoalkyl esters of polyols such as polyethylene glycol monoallyl ether acrylic acid ester; (viii) di- or triallylamine. Inter-linking agents having at least one polymerizable double bond and at least one functional group reactive with the acid-containing monomer material include N-methylol acrylamide, glycidyl acrylate, and the like. Suitable inter-linking agents having at least two functional groups reactive with the acid-containing monomer material include glyoxal; polyols such as ethylene glycol and glycerol; polyamines such as alkylene diamines (for example, ethylene diamine), polyalkylene polyamines, polyepoxides, di- or polyglycidyl ethers and the like. Suitable polyvalent metal inter-linking agents which can form ionic interbindings include oxides, hydroxides and salts of weak acids (eg, carbonate, acetate and the like) of alkaline earth metals (eg calcium, magnesium) and zinc, including , for example calcium oxide and zinc diacetate.
Interlinking agents of many of the types mentioned above are described in greater detail in Masuda et al., U.S. Pat. 4,706,663, issued February 28, 1978, and Alien et al., Patent of E.U.A. 4,861,539, issued August 29, 1989, both incorporated herein by reference. Preferred inter-linking agents include the di- or polyesters of mono- or polycarboxylic unsaturated acids of monoallyl ester polyols, the bisacrylamides, and the di- or tri-allylamines. Specific examples of interlinking agents that are especially preferred include N.N'-methylenebisacrylamide and trimethylolpropane triacrylate. The inter-linking agent will generally be from 0.001 mole percent to 5 mole percent of the resulting polymeric hydrogel-forming material. More generally, the inter-linking agent will constitute from 0.01 mole percent to 3 mole percent of the hydrogel forming polymeric gelling agent that is used herein. The hydrogel-forming polymeric gelling agents herein can be used in their partially neutralized form. For purposes of this invention, said materials are considered partially neutralized when at least 25 mole percent and preferably at least 50 mole percent of monomers used to form the polymer are monomers containing an acid group that has been neutralized with a base. Suitable neutralizing base cations include alkali and alkaline alkali hydroxides (eg, KOH, NaOH), ammonium, substituted ammonium, and amines such as amine alcohols (eg, 2-amino-2-methyl-1,3-propanediol. , diethanolamine, and 2-amino-2-methyl-1-propanol This percentage of the total monomers used which are monomers containing neutralized acid group are referred to herein as the "degree of neutralization." The degree of neutralization preferably will not exceed 98% Polymeric hydrogel forming gelling agents suitable for use herein are well known in the art, and are described, for example, in U.S. Patent 4,076,663, Masuda et al., issued on February 1978, US Patent 4,062,817, Westerman, issued December 13, 1977, US Patent 4,286,082, Tsubakimoto et al., issued August 25, 1981, US Patent 5,061, 259 Goldman et al., e. xpedida on October 29, 1991, and patent of E.U.A. 4,654,039, issued March 13, 1987, each of which is incorporated herein in its entirety. Polymeric hydrogel forming gelling agents suitable for use herein are also described in the U.S.A. 4,731, 067, Le-Khac, issued March 15, 1988, patent of E.U.A. 4,743,244, Le-Khac, issued May 10, 1988, patent of E.U.A. 4,813,945, Le-Khac, issued March 21, 1989, patent of E.U.A. 4,880,868, Le-Khac, issued November 14, 1989, patent of E.U.A. 4,892,533, Le-Khac, issued January 9, 1990, patent of E.U.A. 5,026,784, Le-Khac, issued June 25, 1991, patent of E.U.A. 5,079,306, Le-Khac issued January 7, 1992, patent of E.U.A.
,151, 465, Le-Khac, issued September 29, 1992, patent of E.U.A. 4,861, 539, Alien, Farrer and Flesher issued August 29, 1989, and patent of E.U.A. 4,962,172, Alien, Farrer and Flesher, issued October 9, 1990, each of which is incorporated herein by reference in its entirety. Suitable polymeric hydrogel forming agents in particulate form are commercially available from Hoechst Celanese Corporation, Portsmouth, VA, USA (Sanwet ™ Superabsorbent Polymers) Nippon Shokubai, Japan (Aqualic ™, eg, L-75, L- 76) and Dow Chemical Company, Midland, Ml, USA (Dry Tech ™). Polymer hydrogel forming agents in the form of fibers are commercially available from Camelot Technologies Inc., Leominster, MA, USA (Fibersorb ™, for example, SA 7200H, SA 7200M, SA 7000L, SA 7000 and SA 7300). The articles of the present invention may also contain other hydrophilic gelling agents. Those include carboxylic acid-containing polymers as described in other manner above, except those which have relatively lower degrees of inter-binding, so that they exhibit a Tg below 140 ° C, as well as a variety of other soluble polymers. water or colloidally soluble in water, such as cellulose ethers (for example hydroxyethylcellulose, methylcellulose, hydroxypropylmethylcellulose), polyvinylpyrrolidone, polyvinyl alcohol, guar gum, hydroxypropyl guar gum and xanthan gum. Preferred among those additional hydrophilic gelling agents are acid-containing polymers, particularly carboxylic acid-containing polymers. Particularly preferred are those comprising water-soluble polymer of acrylic acid entangled with a polyalkyl polyether of a polyhydric alcohol, and optionally an acrylate ester or a polyfunctional vinylidene monomer. Preferred copolymers useful in the present invention are polymers of a monomer mixture containing from 95 to 99 weight percent of an olefinically unsaturated carboxylic monomer selected from the group consisting of acrylic, methacrylic, and ethacrylic acids.; about 1 to about 3.5 weight percent of an acrylate ester of the formula:
Wherein R is an alkyl radical containing from 10 to 30 carbon atoms and Ri is hydrogen, methyl or ethyl; and 0.1 to 0.6 weight percent of polyether polyalkyltin between polymerizable lacing of a polyhydric alcohol containing more than one alkenyl ether group per molecule in which the original polyhydric alcohol contains at least three carbon atoms and at least three hydroxyl groups. Preferably, these polymers contain from 96 to 97.9 weight percent acrylic acid and from 2.5 to 3.5 weight percent acrylic esters in which the alkyl group contains from 12 to 22 carbon atoms, and Ri is methyl, more preferably the acrylate ester is stearyl methacrylate.
Preferably, the amount of crosslinking polyalkenyl polyester monomer is from 0.2 to 0.4 weight percent. Preferred crosslinking polyether polyalkenyl monomers are allyl pentrythritol, trimethylolpropanediallyl ether or allyl sucrose. These polymers are fully described in the U.S. patent. No. 4,509,949 to Huang et al., issued April 5, 1985, this patent incorporated herein by reference. Other preferred copolymers useful in the present invention are polymers containing at least two monomeric ingredients, one being a monomeric olefinically unsaturated carboxylic acid, and the other being a polyalkenyl, polyether of a polyhydric alcohol. Additional monomeric materials may be present in the monomer mixture if desired, even in a predominant proportion. The first monomeric ingredient useful in the production of these carboxylic polymers are olefinically unsaturated carboxylic acids containing at least one carbon-to-carbon activated olefinic double bond, and at least one carboxyl group. The preferred carboxylic monomers are acrylic acids having the general structure:
wherein R 2 is a substituent selected from the class consisting of hydrogen, halogen, and cyanogen groups (-C =), monovalent alkyl radicals, monovalent alkaryl radicals, and monovalent cycloaliphatic radicals. Of this class, the most preferred are acrylic, methacrylic, and ethacrylic acid. Another useful carboxylic monomer is maleic anhydride or acid. The amount of acid used will be from 95.5 to 98.9 by weight. The second monomeric ingredient useful in the production of these carboxylic polymers are polyalkenyl polyethers having more than one alkenyl ether group per molecule, such as alkenyl groups in which a double olefinic bond is present attached to a methylene terminal group CH2 = C < . Additional monomeric materials that may be present in the polymers include polyfunctional vinyldene monomers containing at least two terminal groups CH2 < including for example, butadiene, isoprene, divinyl benzene, divinyl naphthalene, allyl acrylates, and the like. These polymers are fully described in the U.S. patent. No. 2,798,053 A Brown, issued July 2, 1957, which is incorporated herein by reference in its entirety. Examples of carboxylic acid copolymers useful in the present invention include Carbomer 934, carbomer 941, carbomer 950, carbomer 951, carbomer 954, carbomer 980, carbomer 981, carbomer 1342, interlaced polymer of acrylates / C10-30 alkyl acrylate (available such as Carbopol 934, Carbopol 941, Carbopol 950, Carbopol 951, Carbopol 954, Carbopol 980, Carbopol 981, Carbopol 1342, and the Pemulen series respectively, by BF Goodrich).
Other carboxylic acid copolymers useful in the present invention include sodium salts of acrylic acid / acrylamide copolymers sold by the Hoechst Celanese Corporation under the tradename Hostaceren PN73. Also included are hydrogel polymers sold by Lipo Chemicals Inc. under the trade name HYPAN hydrogels. These hydrogels consist of crystalline nitrate folds on a C-C base structure with several other pendant groups such as carboxyls, amides, and amylin. An example would include HYPAN SA 100 H, a polymer powder available from Lipo Chemical. Neutralizing agents to be used to neutralize the acid groups of these polymers include those described above.
Cationic Surfactants Cationic surfactants are typically categorized as non-foaming surfactants but may be used in the articles of the present invention with the proviso that they do not adversely impact the desired benefits of the articles. Non-limiting examples of cationic surfactants useful herein are described in McCutcheon's book, Detergents and Emulsifiers, North American edition (1986), published by allured Publishing Corporation; and in McCutcheon's, Functional Materials, North American Edition (1992); both of which are incorporated by reference to the present in their entirety.
Non-limiting examples of cationic surfactants useful herein include cationic alkylammonium salts such as those having the formula: R? R2R3R N +? - in which Ri is selected from an alkyl group having 12 to 18 carbon atoms , or aromatic, aryl or alkaryl groups having from 12 to 18 carbon atoms; R2, R3 and Rt are independently selected from hydrogen, an alkyl group having from 1 to 18 carbon atoms, or aromatic, aryl or alkaryl groups having from 12 to 18 carbon atoms; and X is an anion selected from chlorine, bromine, iodine, acetate, phosphate, nitrate, sulfate, methyl sulfate, ethyl sulfate, tosylate, lactate, citrate, glycolate, and mixtures thereof. Additionally, the alkyl groups may also contain ether linkages, or hydroxy or amino group substituents (for example the alkyl groups may contain portions of polyethylene glycol and polypropylene glycol). More preferably, Ri is an alkyl group having from 12 to 18 carbon atoms; R2 is selected from H or from an alkyl group having from 1 to 18 carbon atoms; R3 and R are independently selected from H or an alkyl group having from 1 to 3 carbon atoms; and X is as described in the previous paragraph. Most preferably, Ri is an alkyl group having from about 12 to about 18 carbon atoms; R2, R3 and R4 are selected from H or an alkyl group having from about 1 to about 3 carbon atoms; and X is as previously described.
Alternatively, other useful cationic surfactants include amino-amides, in which in the above structure Ri is alternatively R5CO- (CH2) n-, wherein R5 is an alkyl group having from about 12 to about 22 carbon atoms and n is an integer from about 2 to about 6, more preferably from about 2 to about 4, and more preferably from about 2 to about 3. Non-limiting examples of these cationic emulsifiers include stearamidopropyl PG-diammonium chloride, stearamidopropyl ether sulfate ethylenium, stearamidopropyl dimethyl (myristyl acetate) ammonium chloride, stearamidopropyl dimethyltearylammonium tosylate, stearamidopropyl dimethyl ammonium chloride, stearamidopropyl dimethyl ammonium lactate and mixtures thereof. Non-limiting examples of cationic surfactants based on quaternary ammonium salt include those selected from the group consisting of cetylammonium chloride, cetylammonium bromide, laurylammonium chloride, laurylammonium bromide, stearylammonium chloride, stearylammonium bromide, cetildimetílamonio bromide cetildimetilamonio, lauryldimethylammonium chloride, bromide laurildimefilamonio of stearyldimethylammonium chloride, bromide 'of stearyldimethylammonium, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, stearyltrimethylammonium chloride, bromide stearyltrimethylammonium lauryldimethylammonium chloride , stearyldimethyl-tert-butyl-dimethyldimethylammonium chloride, di-ethyl ammonium chloride, di-ethyl ammonium bromide, dilaurammonium chloride, dilaurammonium bromide, distearylammonium chloride, distearylammonium bromide, dicetylmethylammonium chloride, dicetylmethylammonium bromide, dilaurylmethylammonium chloride, dilaurylmethylammonium bromide, distearylmethylammonium chloride, distearyldimethylammonium chloride, distearylmethylammonium bromide, and mixtures thereof. Additional quaternary ammonium salts include those in which the C12 to C22 alkyl carbon chain is obtained from tallow fatty acid or coconut fatty acid. The term "tallow" refers to an alkyl group obtained from tallow fatty acids (usually hydrogenated tallow fatty acids), which generally has mixtures of alkyl chains in the range of C16 to C18. The term "coco" refers to an alkyl group obtained from coconut fatty acid, which generally has mixtures of alkyl chains in the range of C12 to C14. Examples of quaternary ammonium salts derived from these tallow and coconut sources include ditallowdimethylammonium chloride, ditallowdimethylammonium methylisulfate, di (hydrogenated tallow) dimethylammonium chloride, di (hydrogenated tallow) dimethylammonium acetate, ditallowdipropylammonium phosphate, ditallowdimethylammonium nitrate , di (cocoalkyl) dimethylammonium chloride, di (cocoalkyl) dimethylammonium bromide, tallowammonium chloride, cocoammonium chloride, stearamidopropyl PG-diammonium chloride, stearamidopropylethylammonium ethosulfate, stearamidopropyl dimethyl (myristyl acetate) ammonium chloride or, stearamidopropyl dimethyltearylammonium tosylate, stearamidopropyl dimethyl ammonium chloride, stearamidopropyl dimethyl ammonium lactate and mixtures thereof. Preferred preferred cationic surfactants useful herein include those selected from the group consisting of dilauryl dimethyl ammonium chloride, distearyldimethylammonium chloride, dimyristyldimethylammonium chloride, dipalmityldimethylammonium chloride, distearyldimethylammonium chloride, and mixtures thereof. Chelators The articles of the present invention may also comprise a safe and effective amount of a chelator or chelating agent. As used herein, "chelator" or "chelating agent" refers to an active agent capable of removing a metal ion from a system by forming a complex such that the metal ion can not be easily divided. or catalyze in chemical reactions. The inclusion of a chelating agent is especially useful to provide protection against UV radiation that can contribute to excessive scaling or changes in skin texture and against other environmental agents that can cause skin damage. A safe and effective amount of a chelating agent can be added to the compositions of this invention, preferably from about 0.1% to about 10%, more preferably from about 1% to about 5% of the composition. Exemplary chelators that are useful herein are described in the US patent. No. 5,487,884, issued on 1/30/96 to Bissett et.al; International publication No. 91/16035, Bush etal, published on 10/31/95; and international publication No. 91/16034, Bush et.al, published on 10/31/95. Preferred chelators useful in the compositions of the subject invention are furildioxime and derivatives thereof.
Flavonoids The articles of the present invention may optionally comprise a flavonoid compound. Flavonoids are described extensively in the U.S. Patents. 5,686,082 and 5,686,367, both are incorporated herein by reference. Flavonoids suitable for use in the present invention are flavanones selected from the group consisting of unsubstituted flavanones, monosubstituted flavanones, and mixtures thereof; the chalcones selected from the group consisting of unsubstituted chalcones, monosubstituted chalcones, disubstituted chalcones, trisubstituted chalcones, and mixtures thereof; flavones selected from the group consisting of unsubstituted flavones, monosubstituted flavones, disubstituted flavones and mixtures thereof; one or more isoflavones; coumarins selected from the group consisting of unsubstituted coumarins, monosubstituted coumarins, disubstituted coumarins and mixtures thereof; chromones selected from the group consisting of unsubstituted chromones, monosubstituted chromones, disubstituted chromones, and mixtures thereof; one or more dicumaroles; one or more chromanones; one or more chromanols; isomers (for example cis / trans isomers) thereof; and mixtures thereof. The term "susfituido" as used herein, means flavonoids wherein one or more hydrogen atoms of the flavonoid has been independently replaced with hydroxyl, C 1 -C 8 alkyl, C 1 -C 4 alkoxy, O-glycoside, and the like or a mixture of these substituents. Examples of suitable flavonoids include, but are not limited to, unsubstituted flavanone, monohydroxy flavanones (e.g. 2'-hydroxy flavanone, 6-hydroxy flavanone, 7-hydroxy flavanone, etc.), monoalkoxy flavanones (e.g., 5-methoxy flavanone , 6-methoxy flavanone, 7-methoxy flavanone, 4'-methoxy flavanone, etc.), unsubstituted chalcone (especially unsubstituted trans-chalcone), mono-hydroxy calconas (for example 2'-hydroxy chalcone, 4-hydroxy chalcone, etc.), di-hydroxy calcona (eg, 2 ', 4-dihydroxychalcone, 2', 4'-dihydroxychalcone, 2,2'-dihydroxychalcone, 2 ', 3-dihydroxychalcone, 2', 5'-dihydroxychalcone, etc.) , and trihydroxychalcones (for example 2,, 3,, 4'-trihydroxicalcona, 4,2 ', 4'-trihydroxicalcona, 2,2,, 4, -trihidroxicalcona, etc), unsubstituted flavone, 7,2'-dihydroxyflavone , 3 ', 4'-dihydroxynaphthalflavone, 4'-hydroxy flavone, 5,6-benzoflavone, and 7,8-benzoflavone, unsubstituted isoflavone, daidzein (7,4'-dihydroxy isoflavone), 5,7-dihydroxy-4 '-methoxy isoflavone, isoflavones soy (a mixture extracted from soybeans), unsubstituted coumarin, 4-hydroxycoumarin, 7-hydroxycoumarin, 6-hydroxy-4-methylcoumarin, unsubstituted chromone, 3-formylchromone, 3-formyl-6-isopropylchromone, unsubstituted dicoumarol, chromanone unsubstituted, unsubstituted chromanol and mixtures thereof. Preferred for use herein are unsubstituted phlovanone, methoxy flovanones, unsubstituted chalcone, 2 ', 4-dihydroxychalcone, and mixtures thereof. Most preferred are unsubstituted flavanone, unsubstituted chalcone (especially the trans isomer), and mixtures thereof. They can be synthetic materials or obtained as extracts from natural sources (for example plants). The material that comes from natural sources can also be derived (for example glycoside, an ester or an ether derivative prepared after extraction from a natural source). The flavonoid compounds useful herein are commercially available from a number of sources, for example Indofine Chemical Company, Inc. (Somerville, New Jersey), Steraloids, Inc. (Wilton, New Hampshire), and Aldrich Chemical Company, Inc. (Milwaukee, Wisconsin). Mixtures of the above flavonoid compounds can also be used. The flavonoid compounds described herein are preferably present in the present invention at concentrations of from about 0.01% to about 20%, more preferably from about 0.1% to about 10%, and more preferably from about 0.5% to about 5%.
Sterols The articles of the present invention may comprise a safe and effective form of one or more sterol compounds. Examples of useful sterol compounds include sitosterol, stigmasterol, campesterol, brassicaterol, lanosterol, 7-dehydrocholesterol, and mixtures thereof. These can be of synthetic origin or from natural sources, for example mixtures extracted from plant sources (for example, phytosterols).
Anti-Cellulite Agents The articles of the present invention may also comprise a safe and effective amount of an anti-cellulitis agent. Suitable agents may include, but are not limited to, janthine compounds (e.g., caffeine, theophylline, theobromine, and aminophylline).
Skin lightening agents The articles of the present invention may comprise a skin lightening agent. When used, the compositions preferably comprise from about 0.1% to about 10%, most preferably from about 0.2% to about 5%, also preferably from about 0.5% to about 2% by weight of the composition, of an agent to lighten the skin. Suitable skin lightening agents include those known in the art, including kojic acid, arbutin, ascorbic acid and derivatives thereof, for example, magnesium ascorbyl phosphate or sodium ascorbyl phosphate or other ascorbyl phosphate salts. Suitable skin lightening agents for use in the present invention also include those described in co-pending patent application no. series 08 / 479,935, filed on June 7, 1995 in the name of Hillebrand, corresponding to the PCT application No. E.U.A. 95/07432, filed June 12, 1995; and co-pending patent application Serial No. 08 / 390,152, filed on February 24, 1995 in the names of Kalla L. Kvalnes, Mitchell A. DeLong, Barton J. Bradbury, Curtis B. Motley and John D. Carter, corresponding to the PCT application No. EUA 95/02809, filed on March 1, 1995, published on September 8, 1995; incorporated herein by reference. Binders The articles of the present invention may optionally comprise binders. Binders or bonding materials are useful for sealing several layers of articles from the present to another, thus maintaining the integrity of the article. Binders can be found in a variety of forms including, but not limited to, dew, tapes, separate layers, binding fibers, etc. Suitable binders may comprise latexes, polyamides, polyesters, polyolefins and combinations thereof.
Manufacturing Methods The cleaning articles of the present invention are manufactured by adding the cleaning component to an appropriate sheet of the first layer by means of a conventional method which may include, but is not limited to, spraying, slot coating, and transfer by rollers (for example pressure cylinder). The sheet of the second layer is subsequently placed on the sheet of the first layer on the cleaning component. The sheets are sealed by a conventional sealing method which may include, but is not limited to, heat, pressure, glue, ultrasound, etc. The sealed sheets are subsequently divided into units for consumer use. Optional manufacturing steps may include calendering to flatten the article as well as drying.
Methods for cleaning and delivering a therapeutic or aesthetic benefit agent to the skin or hair The present invention also relates to a method for cleaning the skin or hair with a cleaning article of the present invention. These methods comprise the steps of: a) wetting with water a disposable cleaning article comprising an insoluble water substrate comprising 1) a first open layer having a water flow rate of about 0.4 cm 3 / cm 2 to about 20 cm3 / cm2 and 2) a second layer attached to the first layer; and a cleaning component comprising one or more surfactants, said component being positioned adjacent to the substrate and b) contacting the skin or hair with the moistened article. In other embodiments, the present invention is also useful for delivering various therapeutic or aesthetic benefit agents to the skin or hair wherein the method further comprises the step of contacting the skin or hair with an article comprising at least two layers with a component of the benefit agent placed between the two layers. The articles of the present invention serve to moisten with water before use. The article is moistened by immersion in water or by placing it under a stream of water. When the articles of the present invention comprise a foaming surfactant, in the cleaning component, foam is generated from the article by mechanical agitation and / or forming of the article before or during contact of the article with the skin or the skin. hair. The resulting foam is useful for cleaning the skin or hair. During the procedure of cleaning and subsequent rinsing with water, any agent of therapeutic or aesthetic benefit is deposited on the skin or hair. The deposition of therapeutic or aesthetic benefit agents is improved by physical contact of the substrate with the skin or hair as well as by the inclusion of one or more deposition aids.
EXAMPLES
The following examples further describe and demonstrate modalities within the scope of the present invention. In the following examples, all the ingredients are named at an active level. The examples are given solely for the purpose of illustration and should not be construed as limitations of the present invention, since many variations thereof are possible without departing from the spirit and scope of the invention. The ingredients are identified by chemical name or CTFA
1. - Cleaning components EXAMPLE 1
Prepare a representative cleaning component for the articles of the present invention in the following manner. > 0 Scrape 53.0 grams of a bar soap that includes the following components:
Mix bar soap shavings with 37.0 grams of glycerin (99.7%), 9.5 grams of water and 0.5 grams of perfume. Heat the mixture to 93.3 ° C while stirring continuously. Cold grind the mixture in a standard three-roll mill and store the cleaning component in a properly sealed container.
EXAMPLE 2
Prepare a representative cleaning component for the articles of the present invention in the following manner. Scrape 40.0 grams of a bar soap that includes the following components:
Mix the bar soap shavings with 45.0 grams of glycerin (99.7%), 4.5 grams of water, and 0.5 grams of perfume. Heat the mixture to 93.3 ° C while stirring continuously. Grind the cold mix in a standard three-roll mill and store the cleaning component in a properly sealed container.
EXAMPLE 3
A representative powder cleaning component for the articles of the present invention is prepared as follows: Scrape 40.0 grams of a bar soap that includes the following components:
Store the bar soap flakes in a suitable sealed container.
EXAMPLE 4
A representative cleaning component for the articles of the present invention is prepared in the following manner. Scrape 40.0 grams of a bar soap that includes the following components:
Mix the bar soap flakes with baking soda in a 90:10 weight ratio. Grind the mixture twice in a standard three-roll mill. Collect the leaflets and store them in a suitable sealed container.
EXAMPLE 5
A representative cleaning component is prepared in the following manner. Mix 180 grams of the cleaning component of Example 1 with 12 grams of a hydrogel-forming polymeric gelling agent (also referred to as an absorbent gelling material or AGM). The AGM should not expand in the mix but provides the advantage of expansion during use in the shower to create a three-dimensional volume that makes a thin substrate feel like a denser cloth.
EXAMPLE 6
A representative cleaning component is prepared in the following manner. The cleaning component of example 2 is mixed with 0.1% by weight of the bar soap flakes of a protease enzyme. Next, mix the resulting mixture with 2%, by weight of the cleaning component, of dry hydrocolloid, sodium carboxymethylcellulose and grind. Store the enzyme cleaning component in a properly sealed container.
EXAMPLE 7
A representative cleaning component is prepared in the following manner. Mix the cleaning component of Example 1 with 1%, by weight of the cleaning component, of jantan gum and cold-mill the mixture twice in a three-roll bench mill. Once it is milled, store the cleaning component in a properly sealed container.
EXAMPLE 8
Prepare a representative cleaning component that includes the following components:
EXAMPLE 9
Prepare a representative cleaning component that includes the following components.
1 Available from Hoechst Celanese 2Dvailable from Rhone Poulenc Add ingredients slowly in the following order, at 60 ° C until each dissolves in water: TEA, lauryl phosphate, glucosamide. Cool to 45 ° C and add sultaine, polyquaternium 39 and sulfate, stir as before. Add perfume, preservatives and cool to room temperature.
EXAMPLE 10
Prepare a liquid cleaning component without tears that includes the following components:
The characteristics that distinguish this composition are its non-irritating properties for the skin and eyes.
II. Components to moisturize the skin
EXAMPLE 11
A component for moisturizing the representative skin is prepared in the following way:
Melt the Elvax in the SEFA cotonate at 90 ° C and mix. Add the powders and mix again. Cool the mixture to 40 ° C and then add perfume. Store the mixture in a properly sealed container.
EXAMPLE 12
Prepare a representative skin conditioning component that includes the following components.
1Available as Hamplex TNP, Hampshire Chemical Co.
Heat the silicone fluid to 65 ° C, stir in the polyglycine ether, inorganic sunscreen, stearyl alcohol, glyceryl stearate, polybutene, silicone rubber and wax. Mix until it becomes homogeneous. Mix cyclomethicone, fragrance, vitamin and glycerin separately. Add this while cooling to room temperature. Store the composition in a sealed jar until ready to add to an item.
EXAMPLE 13
Prepare a representative skin conditioning component that includes the following components.
1Available as Arlacel P135 from ICI 2SEFA is an acronym for sucrose esters of fatty acids, which are completely esterified.
EXAMPLE 14
Prepare a representative skin conditioning component that includes the following components.
1Available as Epíkuron 200 by Lucas Meyer Prepare a microemulsion by mixing together all the ingredients at room temperature except the gelling agent until a clear composition is obtained. Add the gelling agent and heat carefully while stirring until the gelling agent melts and mixes with the composition. Cool quickly
EXAMPLE 15
Prepare a representative skin conditioning component that includes the following components.
Part B - Oligomer gelling agent
1 Available as Hamposyl L-95 from Hampshire Chemical, dry 2 Available as Epomin SP-018, molecular weight around 1800, from Nippon Shokubai Co. 3 Available as Sepigel 305 from Seppic Corp. Mix part A except the cationic polymer with Heat at approximately 65 ° C until it becomes homogeneous. Keep the heat, mix in the physical gelling agents. Cool to 45 ° C and add the cationic polymer. Mix in the polymer gelling agent and continue cooling at room temperature.
lll Articles
EXAMPLE 16
A representative cleaning article is prepared in the following way. Prepare a first open layer by sealing a 20.3 cm x 22.8 cm cellulose-enhancing paper towel that has a high moisture resistance (eg, Bounty Rinse &Re-Use) (as described in U.S. Patent Nos. 4,529,480 and 4,637,859) to a 20.3 cm x 22.8 cm sheet of a 100-mesh film with micro-holes (for example, as described in U.S. Patent No. 4,629,643) by heating the edges with a sealant of impulse until the thermoplastic is completely bound to the cellulose towel. Seal the first layer with the surface aberrations (ie, the male side) facing outward from the cellulosic substrate. Prepare the second layer by sealing a 20.3 cm x 22.8 cm sheet of the same type of cellulosic towel as the first layer to a formed film sheet having 100 mesh micro-holes hydroformed in one direction and micro-holes in the opposite direction. Seal the second layer with the surface aberrations (ie, the male side) of the macro holes against the cellulosic substrate. Add 20 grams of the cleaning component of Example 2 to the exposed male side of the film with micro-holes of the first layer in four equal quadrants (ie, 5 grams in the center of each quadrant). Place the second layer on the cleaning component in the first layer with the cellulose sheet of the second layer facing towards the cleaning component. Then flatten, soften and seal each edge of the layers with an impulse sealer. Cut and round the corners of the substrate. Make stamps through the substrate center in each direction, dividing the item into quadrants. Flatten the cleaning component in the center of the article with a rolling device held in the hand to form an article that generates more than 2000 ml of foam in two minutes in the foam-forming test.
EXAMPLE 17
A representative multiple chamfered cleaning article is prepared in the following manner. Prepare a cleaning article as shown in example 16 except that instead of adding the cleaning component of example 2, 5 grams of the cleaning component of example 1 are added in each of the first and fourth quadrants (diagonally opposite) and add 5 grams of the cleaning component of example 7 in each of the second and third quadrants to form an article that generates more than 2000 ml of foam in two minutes in the foam-forming test.
EXAMPLE 18
A representative cleaning article is prepared in the following way. Prepare a cleaning article as shown in example 16 except that instead of adding the cleaning component of example 2, 12 grams of the cleaning component powder of example 3 is added, also dividing it in the quadrants before sealing.
EXAMPLE 19
A representative cleaning article is prepared in the following way. Prepare a first open layer by placing a formed sheet of film 20.3 cm x 15.2 cm having 0.55 ml holes with the male side on the flat silicone rubber sheet. Place a film sheet formed with 100 mesh with micro holes with the male side of the holes in the upper part of the first formed film sheet. Keep the edges of both films formed in place temporarily.
Prepare the second layer in the same way as the first layer using the same materials. Attach the edges of the materials of the second layer with a heat seal die using a pressure plate heat sealing device (eg, model 808 Sentinel thermal sealer commercially available from Sencorp of Hyannis, MA). Add 115 grams of the cleaning component of Example 1 to the inner surface of the first layer. Place the inner surface of the second layer in the cleaning component with the male side of the formed film of the second layer facing toward the cleaning component. Place the layers on the bottom plate of the heat-sealing die. Heat the top plate that is prepared to be sealed in an hourglass shape about 15.24 cm long and 8.8 cm wide with a narrow waist of 6.35 cm. Carefully place the cleaning component so that they are contained by the seal and do not interfere with the sealed edge. Place a release film between the layers and the hot plates. Seal the edges using a supply pressure of 2.10 Kg / cm2 at a set point of 126.6 ° C for a sealing time of 3 seconds. Remove the resulting article and trim its edges. Fix a hanging cord to the end of the article to form an article that generates around 2000 ml of foam in 2 minutes in the foam-forming test.
EXAMPLE 20
A representative cleaning article is prepared in the following way. Prepare a cleaning article as shown in Example 19 except that the second layer is prepared using a formed film that is both with micro-holes and macro-holes with the male side of the micro-holes facing outward and the female side of the micro-holes seeing outside.
EXAMPLE 21
An article for skin care and representative cleaning is prepared in the following way. Prepare the first open layer by adhering a non-woven cloth bonded with soft adhesive with a basis weight of about 84 grams and a water flow of about 1.9 cm3 / cm2 (commercially available as "Scott Shop Rags") to a layer of film formed with 100 mesh with micro holes with its male side facing the other side from the non-woven cloth, using a continuous coating of contact cement. Cut a section of 38.7 cm2. Add 2 4-gram strips of the cleaning component of Example 2 along two parallel sides, a minimum of 0.63 cm from the edges to allow environment to seal. Add a strip of 4 grams to the enzyme containing the cleaning component of example 6 in the center of the cloth so that it is parallel to the strips of the cleaning component previously added. Prepare a second layer by placing a film sheet formed of 100 mesh with micro holes, the male side looking down on the first total layer. Place a 0.55 mm open formed film sheet, the male side facing down, on top of the formed 100 mesh film with micro holes of the second layer. Seal the edges and two strips parallel to the cleaning component with the impulse sealer. Trim the edges of the article and round the corners. Attach a strap to the back of the item to the non-woven side with a hot melt adhesive to form an article that effectively foams for a total shower, total body cleansing, and leaves the skin moist and smooth.
EXAMPLE 22
A representative cleaning and moistening article is prepared in the following manner. Place the first layer of example 16 on a first sheet of silicone rubber. Add 4 grams of the skin moisturizing component of example 11 to the center of the first layer. Add 20 grams of the cleaning component of Example 7 to a strip in the form of a ring in the outer portion of the first layer. Place the second layer of example 16 on top of the first layer. Place the layers as well as the silicone sheet on the lower plate of an impulse sealer. Heat the top plate that is prepared to seal in an hourglass shape about 15.2 cm long and 8.8 cm wide with a narrow waist of 6.3 cm. Carefully place the cleaning component so that it is included by the seal and does not interfere with the sealed edge. Place a release film between the layers and the hot plates. Seal the edges using a supply pressure of 2.10 Kg / cm2 at a set point of 126.6 ° C for a sealing time of 3 seconds. Remove the resulting article and seal the edges in a rectangular pattern 17.7 cm x 22.8 cm. Trim the edges and round the corners of the article to form an article that effectively foams for a total shower, total body cleaning, and leaves the skin moisturized by depositing the hydrophobic active material in effective amounts.
EXAMPLE 23
A representative cleaning and moisturizing article is prepared in the following manner. Place the first layer of example 16 on the flat silica gel sheet. Add 20 grams of the cleaning component of Example 1 to the center of four quadrants of the sheet, dividing the weight in the same way (ie, 5 grams per quadrant). Place a film sheet formed with 100 mesh with micro holes on the first layer with the male side facing the cleaning component. Permanently fix the layers together, by sealing the edges as well as through the article in a cross pattern using the impulse sealer. The resulting article is about 17.7 cm x 22.8 cm. Place the item on the back of the silicone rubber sheet facing in the same direction and add 5 grams of the skin moisturizing component of example 11 to the center. Place an additional layer of the 100 mesh formed film with micro holes on the article with the male side facing towards the skin moistening component. Place a formed film sheet that has micro-holes of 100 mesh hydroformed in one direction and macro holes in the opposite direction with the micro-holes facing up, as the top layer. Place the article and the additional layer on the bottom plate of a pulse sealer. Place a release film between the article / additional layer and the hot plates. Seal the additional layer to the article only around the moisturizing component for the skin in the form of an hourglass at a supply pressure of 1.40 kg / cm2, 126.6 ° C for a sealing time of 2 seconds. The resulting seal contains the humectant component for the skin in a sleeve located on the equilibrium part of the article. Seal the outer edges of the article and trim to form a foaming article effectively for a total shower, cleaning of the total body, and leaving the skin moisturized by depositing the hydrophobic active material in effective amounts.
EXAMPLE 24
A moistening and cleaning equipment is prepared in the following way. Prepare the cleaning article of example 16. Prepare a moisturizing article for the skin by using the first and second layers of example 16 and substituting 5 grams of the skin moistening component of example 11 for the cleaning component. Pack the first cleaning item and the moistening item together. When used, the skin and hair are cleaned with the cleaning item in the shower or bath. Rinse the skin or body. Moisturizes the skin while still wet, with the moisturizing item.
EXAMPLE 25
A drying and cleaning equipment is prepared as follows: Prepare the cleaning article of example 16. Prepare a drying article by removing the inner lining of a disposable diaper Pampers
Premium and cut an elliptical section of 17.7 cm long absorbent fibrous matte gelling material, and backing sheet (collectively known as the absorbent core). Place a sheet of formed film that has micro-holes of 100 mesh hydroformed in one direction and macro holes in the opposite direction with the micro-holes facing upwards, like the top layer. Seal the edges of the top layer to the backing sheet, using an impulse sealer and trim the edges. Pack the cleaning item and the drying item together.
EXAMPLE 26
A cleaning, wetting and drying equipment is prepared in the following way. Prepare the cleaning article of example 16. Prepare a drying and moistening article in the following manner. Place a mixture of 1 gram of polymeric gelling agent which forms hydrogel (also known as absorbent gelling material or AGM) and 3 g / m2 of petrolatum between two sheets of film formed 100 mesh with microholes with the male sides facing the mixture. Place a formed film sheet that holds micro-holes of 100 mesh hydroformed in one direction and macro holes in the opposite direction with the micro-holes facing upwards as an additional layer. Place the sheets and the additional layer on the lower plate of the impulse sealer so that the seal will form a seal around the wetting component in the shape of an hourglass. Place a release film between the sheets / additional layer and the hot plates. Seal with a supply pressure of 1.4 Kg / cm2, 126.6 ° C, and for a sealing time of 3 seconds. Cut the excess film sheets with 100 mesh micro holes so that the bag with micro holes is fixed to the longer film. Remove the inner lining of the Pampers Premium disposable diaper and cut a 17.7 cm elliptical section of matte fibrous, AGM and backing sheet. Place the induced layers on the fibrous material with the bag on the inner side and seal the edges with an impulse sealer and trim until softened. Pack the cleaning, wetting and drying items together. Use the cleaning item to foam and clean in the shower or bath. Next, use the drying article to effectively dry the skin instead of a towel while simultaneously applying a moisturizer to the skin or hair.
EXAMPLE 27
A two-step, two-step cleaning and moisturizing kit representative is prepared in the following manner. Prepare the cleaning article of example 16. Fix an opaque, opaque white polyethylene hourglass sheet in the center of the article to the outer surface containing the cellulose towel of the outermost portion of the article using a sealant impulse. Next, cut a second leaf in the form of an hourglass that matches transparent polyethylene film, leaving a tongue on one end. Subsequently, prepare a gel by mixing 2 g / m2 of glycerin, 1 gm sucrose octaester of oil fatty acids, cottonseed, 0.6 g / m2 sucrose behenate, 1 gm of aromatic eucalyptus, 0.01 grams of blue dye FD &C, 0.5 grams of Tospearl 145A and heat to 93.3 ° C. Cool the mixture to 32.2 ° C and stir in 2 g / m2 of glycerin and 0.045 grams of protease enzyme (ie, 0.1% by weight of the cleaning component). Add the gel to the top of the opaque polyethylene film. Subsequently, fix the transparent hourglass-shaped film on the gel using a pressure-sensitive adhesive. The two-step kit can be used to first clean the skin or hair in the shower or bath. The article can then be turned over, the tongue removed, and the article used to apply the gel to the leg area. Afterwards the gel is rinsed, leaving the whole body clean and the areas of the legs moisturized and treated.
EXAMPLE 28
An article for skin care, cleaning and moistening is prepared in the following way. Place a sheet of film formed with micro and macro holes that has micro-holes of 100 mesh hydroformed in the opposite direction of their macroorphs, with the micro-holes facing upwards. Prepare a 10% dispersion in water of 4 parts of fatty acid octaes of cottonseed oil, one part of sucrose behenate, and two parts of petrolatum by melting these hydrophobic components together. Next, mix these hydrophobic components with hot water and immediately sprinkle the formed film sheet to make a wetting film. At the time of drying, the added weight of the film formed sprinkled should be around 60 grams per square meter. Subsequently, prepare the cleaning article for the skin of example 16, substituting the wetting film for the outermost open film of example 16 to form an article that effectively forms foam in the shower or bath while the benefit agents of The hydrophobic skin on the outside of the item deposits enough material on the skin or hair to leave moisturizing sensation.
EXAMPLE 29
A representative cleaning article is prepared in the following way. Prepare a stretchable, stretchable film by stretching a formed, 100 mesh, apertured film between the scored plates as described in Example 1 of the US patent. No. 5,518,801 (Chappell, et al). The resulting deformed film has a significant z-direction gauge and a smooth feel as a result of stretching. Subsequently, prepare a cleaning article as mentioned in example 16 above, replacing the formed, elastic, stretchable film with the film layer with micro and macro-holes that is on the exterior side of the article. The cleaning item has a soft feel.
EXAMPLE 30
A representative cleaning article is prepared in the following way. Prepare two stretchable, elastic formed films as mentioned in example 29. Subsequently, prepare the article of example 16, substituting the two stretch films for both of the formed film sheets of example 16, the sheet with micro-holes and the sheets with micro and macro holes. The cleaning item has a soft, and thick feeling.
EXAMPLE 31
A cleaning article for representative cars is prepared in the following way. Mix 50.0 grams of the liquid car wash concentrate (eg "Armor All" ™ or other car wash concentrate containing a surfactant, eg, alkylarylsulfonate) with 5 grams of a hydrogel-forming polymeric gelling agent (AGM). Dry the mixture in a convection oven at 45 ° C for 24 hours, stirring occasionally. Once the gelled paste is formed, spread the paste between a first layer and the second layer of a formed film, with micro-holes having micro-holes of 100 mesh hydroformed. Subsequently, divide a core of a diaper containing the cellulose wadding spread to the air and AGM and place it on the outer surfaces of the first layer and the second layer with the layers extending beyond the edges of the wadding. Add two additional layers to the outer surface of the outer surface of the diaper core material so that additional layers extend beyond the wadding. The first additional layer laid is the formed film which is described in the U.S. patent. No. 4,342,314 whose male holes see the wadding. The second additional layer laid is a film formed with microcracks and macro holes that is described in the U.S. patent. No. 4,629,643, with the micro holes facing the male side to the outside of the article, and the macro holes in the opposite direction. Prepare an additional layer to be placed on the opposite side of the article to the first two additional layers by laminating with adhesive the formed film described in the U.S. patent. No. 4, 342,314 to a layer of non-woven synthetic material adhesively bonded having a basis weight of about 7.05 g / m2 and a water flow rate of about 1.9 cm3 / cm2 with the male side facing the non-woven part . Place the laminated material against the cellulose wadding with the non-woven side facing towards the outermost portion of the article. Seal the edges with an impulse sealer and trim. The article measures around 20.3 cm by 15.2 cm and weighs 29.2 grams and is suitable for cleaning an entire car by moistening it with water and rubbing it. The article does not scratch the outside of the car in the presence of dirt when the formed film is used as the side to rub; and it is easily rinsed to rinse it when it gets dirty, without removing the surfactant.
EXAMPLE 32
Prepare a representative cleaning item in the following way. A first layer with orifices is prepared which is a laminated material formed under vacuum from a formed film comprising low density polyethylene and having about 290 holes formed under vacuum per square centimeter, and a fibrous nonwoven material having a basis weight of about 15 gr / m2 comprising polyester fibers of 20 microns. The layer has a water flow of around 100 cm3 / cm2. The cleaning component of Example 8 is extruded in lane in lines on the film side of the laminate formed under vacuum in rows of about 2.54 cm apart to achieve about 4 grams of the surfactant composition per finished article. A layer of the first layer with holes is cut into a size of 15.2 cm by 25.4 cm. A polyester batter of 67.8 g / m2 cut of the same size is placed on the side coated with surfactant of the first layer. The polyester wadding has a basis weight of 67.8 g / m2 and is comprised of a mixture of fibers with an average diameter of 23 microns and 40 microns, at least some of which are folded. The thickness of the wadding is around 0.58 cm which was measured at 0.42 g / m2. It is believed that the batt joins with heat, without using adhesive. The wadding layer is sealed to the first layer with holes in the shape of a mitten, open at one end, by sealing the edges using a heat seal die and a pressure plate heat sealing device such as the model 808 Sentinel heat sealer available of Sencorp, Hyannis, MA. The edges are trimmed and the item is ready to be used.
EXAMPLE 33
Prepare a representative cleaning item in the following way. A first layer with holes is prepared which is a formed film comprising low density polyethylene (LLDPE) having about 65 holes formed in vacuum per square centimeter and water flow of about 12.8 cm3 / cm2. The surfactant is coated on the male side that extends from the film formed in the same manner as described in example 32. A layer of a batt which is a polyester of 135.6 g / m2 is placed on a side coated with surfactant of the first layer with holes. The polyester wadding has a basis weight of 135.6 g / m2 and is comprised of polyester fibers of around an average diameter of 30 microns and is bonded with adhesive, available for example as Mountain Mist Extra
Heavy Batting # 205 by Stearns Textiles, Cincinnati, OH. A cellulose layer is placed on the exposed side remaining from the first layer with holes. The layers are prepared as a mitten in the same way as described above.
EXAMPLE 34
Prepare a representative cleaning item in the following manner. A layer of a very soft batting comprising a homogeneous bicomponent blend of wrapped 3-denier wrapped core fibers having an outer layer of polyethylene surrounding a core of PET and hollow PET fibers of 8 denier, and having a basis weight around of 49 g / m2 is immersed in the surfactant composition of example 9 until it absorbs 10 grams of the composition within the fiber slits, and the composition is dried. The batt has a thickness of about 2463.8 micrometers2 measured at 2.52 g / m2, a tensile strength in the machine direction of about 1350 grams per linear centimeter and an absorbency capacity of about 1750%, before coating. A first layer with holes that is a formed film that is a 50/50 LDPE / HDPE blend with an internal black mesh cotton canvas is placed against one side of the batting. The formed film has about 10 holes per square centimeter and a water flow of about 17.3 cm3 / cm2. The formed film is sealed to the batt in a 12.9 cm2 grid using an impulse bar sealer. A third layer that is a fibrous nonwoven material is placed against the formed film. The non-woven material is a blend of fine spun lace of 70% rayon and 30% PET fibers, joined with a styrene-butadiene adhesive, which is hydrofoiled to form holes of about 2 mm in diameter and having a basis weight of about 70 gr / m2. The layers are prepared in an oval shaped article measuring about 25.4 cm by 17.7 cm with rounded corners, by sealing the edges and 3 stitches in the center of the article using a heat seal die and a pressure plate heat sealing device such as a model 808 Sentinel heat sealer available from Sencorp, Hyannis, MA. The edges are trimmed and the item is ready to be used.
EXAMPLE 35
Prepare a representative cleaning and conditioning item in the following way. The article of example 34 is prepared, except that the batting used is comprised of bicomponent fibers of 3 denier and has a thickness of 2006.6 micrometers2 measured at 2.54 g / m2 and has a basis weight of about 50 g / m2. Before sealing the item, a package that can be broken is prepared and sealed in the article as follows. A pack that can be broken is prepared using a thin sheet film coated with polymer sealed with 3 strong seals on 3 edges and a fourth weaker seal along one edge. The package measures about 3.17 cm by 5.08 cm and is filled with 3.5 grams of the skin care composition of Example 13 before sealing the trailing edge. The package is broken by the user of the article, requiring only little pressure on the hand to perform it. The edges of the thin sheet package are rounded. The pack that can be broken is placed in a piece of a white polyethylene film of 76.2 micrometers2 in thickness measuring approximately 16.1 cm2, and is sealed to the fibrous nonwoven material described in example 34. The fibrous nonwoven material is subsequently sealed on the other side of the article of example 34 in the same way as described above, making sure that the sealing points in the center of the article do not make contact with the pack that can be broken.
EXAMPLE 36
Prepare a representative cleaning item in the following way. A very soft wadding layer comprising a homogeneous bicomponent blend of folded 3-denier wrapped core fibers having an outer layer of polyethylene surrounding a core of PET and 8 denier hollow PET fibers, and having a basis weight of about 49 g / m2 is immersed in the surfactant composition of Example 10 until it absorbs 10 grams of the composition within the fiber slits, and the composition is dried. The batting has a thickness of about 2463.8 micrometers2 measured at 2.52 g / m2, a tensile strength in the machine direction of about 1350 grams per linear centimeter and an absorbency of about 1750%, before coating. A first layer with orifices which is a formed film which is a 50/50 LDPE / HDPE blend was vacuum formed into a thick plate. The formed film has approximately 10 holes per square centimeter and a water flow of about 15.13 cm3 / cm2. The formed film is sealed to the batt in a 12.9 cm2 grid using an impulse bar sealer. A third layer that is a fibrous nonwoven material is placed against the formed film. The non-woven material is a mixture of fine spun lace of 70% rayon and 30% of PET fibers bonded with a styrene-butadiene adhesive, which is hydroabsorbed to form holes of about 2 mm in diameter and which has a weight base of around 70 gr / m2. The layers are prepared in an oval-shaped article that measures approximately 25.4 cm by 17.7 cm with rounded corners by sealing the edges at 3 points in the center of the article using a heat seal die and a pressure plate heat sealing device such as a model 808 Sentinel heat sealer available from Sencorp, Hyannis, MA. The edges are trimmed and the item is ready to be used.
EXAMPLE 37
Prepare a representative cleaning and conditioning item in the following way. The article of example 35 is prepared, except that 3.5 grams of the skin care composition of example 12 is used in the pack that can be broken.
EXAMPLE 38
Prepare a representative cleaning and conditioning item in the following way. The article of Example 35 is prepared, except that 3.5 grams of the skin care composition of Example 14 is used in the pack that can be broken.
EXAMPLE 39
Prepare a representative cleaning and conditioning item in the following way. The cleaning mitt of Example 32 is prepared. Four grams of the skin benefit composition of Example 12 is uniformly coated on the article surfaces by heating the composition and pumping through a narrow slit die., through which the mitten is dragged. Both surfaces of the article are coated. The article is cooled in a refrigerator to solidify the composition to condition and packaged until ready to be used.
Claims (12)
1. - A disposable cleaning article comprising: a) a water insoluble substrate comprising: 1) a first layer with holes wherein said first layer has a water flow rate of about 0.4 cm 3 / cm 2 to about 20 cm 3 / cm2; 2) a second layer attached to said first layer; and b) a cleaning component comprising a surfactant, said component being placed between said first layer and said second layer of said substrate.
2. The article according to claim 1, further characterized in that said first layer is selected from the group consisting of formed films and materials of mixed material of formed film.
3. The article according to claim 1, further characterized in that said second layer is selected from the group consisting of nonwovens, fabrics, sponges, meshes in polymeric networks, films formed and combinations thereof.
4. The article according to claim 1, further characterized in that said second layer has a water flow rate of about 5 cm3 / cm2 to about 120 cm3 / cm2.
5. - The article according to claim 1, further characterized in that the second layer is selected from the group consisting of formed films and materials of mixed material of formed film.
6. The article according to claim 1, further characterized in that it comprises one or more additional layers.
7. The article according to claim 6, further characterized in that said additional layer is selected from foam, corrugated materials, macroscopically expanded materials, and combinations thereof.
8. The article according to claim 1, further characterized in that it has a flow difference (or gradient) of at least 2.5 cm3 / cm2-s between said first layer and said second layer.
9. A method for cleaning the skin and hair comprising the steps of: a) moistening with water the article according to claim 1; and b) contacting the skin or hair with the moistened article.
10. A disposable cleaning article comprising: a) a water-insoluble substrate comprising: 1) a first layer with holes having an outer surface and an inner surface wherein said first layer comprises a formed film and said first layer has a water flow velocity of about 0.4 cm3 / cm2-s to about 20 cm3 / cm2-s, 2) a second layer having an outer surface and an inner surface wherein said second layer comprises a formed film and wherein said second layer is positioned adjacent to said first layer; 3) a third layer comprising cellulosic fibers, said third layer being positioned adjacent said outer surface of said first layer; and b) a cleaning component comprising a surfactant, said component being positioned adjacent to the substrate.
11. The disposable cleaning article comprises: a) a water-insoluble substrate comprising: 1) a first layer with holes wherein said first layer has a water flow rate of about 0.4 cm3 / cm2-s about 20 cm3 / cm2-s; 2) a second layer attached to said first layer; b) a cleaning component comprising a surfactant, said component positioned adjacent to said substrate; and e) a therapeutic ben component positioned adjacent to said substrate.
12. A cleaning equipment comprising the article as claimed in claim 1.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US60/116,565 | 1999-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
MXPA01007417A true MXPA01007417A (en) | 2002-06-05 |
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